Health ConditionsFever, or pyrexia, is the elevation of an individual's core body temperature above a "set-point" regulated by the body's thermoregulatory center in the hypothalamus. This increase in the body's "set-point" temperature is often due to a physiological process brought about by infectious causes or non-infectious causes such as inflammation, malignancy, or autoimmune processes.
The normal temperature of the human body is approximately 37 degrees Celsius (°C), or 98.6 degrees Fahrenheit (°F), and varies by about 0.5°C throughout the day. In the case of a fever, the increase in core body temperature is often greater than 0.5°C and is attributed to a fever-inducing substance (pyrogen). Fever is a physiological process of the innate immune response against many infections and diseases, characterized by an elevation of temperature above the normal range of 36.5â37.5°C (98â100°F) due to an increase in the body temperature regulatory set-point.
It is essential to understand that the definition of fever is not the same as that of hyperthermia (hyperpyrexia). Fever differs from hyperpyrexia and hyperthermia associated with hot environments and pharmacological triggers.
Fever is a cardinal response to infection that has been conserved in warm and cold-blooded vertebrates for over 600 million years of evolution. The fever response is executed by integrated physiological and neuronal circuitry and confers a survival benefit during infection.
The induction of fever results in inhibition of bacterial growth, increased bactericidal effects of neutrophils, production of acute-phase protein synthesis and other physiological changes such as anorexia and somnolence. These changes suggest that fever has an adaptive role in the host's survival during infection.
The protective processes of the immune response are optimal at high temperature (around 39.5°C). In addition to its function as an endogenous pyrogen, IL-1 activates T-lymphocytes to produce various factors, such as interferon (INF) and IL-2, which are vital for immune response. The production of fever simultaneously with lymphocyte activation constitutes the clearest and strongest evidence in favour of the protective role of fever.
Febrile response is mediated by endogenous pyrogens (cytokines) in response to exogenous pyrogens, primarily micro-organisms or their direct products (toxins). These endogenous pyrogens act on thermo-sensitive neurons in the hypothalamus, which ultimately upgrade the set point via prostaglandins. The body reacts by increasing heat production and decreasing heat loss until the body temperature reaches this elevated set point.
These peripheral endogenous pyrogens are cytokines that are produced by leukocytes and other cells, the most known of which are interleukin-1ÎČ (IL-1ÎČ), tumor necrosis factor-α (TNF-α), and interleukin-6 (IL-6). Because of the capacity of these molecules to induce their own synthesis and the synthesis of other cytokines, they can also be synthesized in the central nervous system.
These pathways induce the expression of endogenous pyrogens, including a variety of cytokines such as IL-1α, IL-1ÎČ, IL-6, TNF-α, TNF-ÎČ, IFN-α, IFN-ÎČ, and IFN-Îł.
It is well-established that prostaglandin E2 is the final mediator of fever, which by binding to its EP3 receptor subtype in the preoptic hypothalamus initiates thermogenesis. The synthesis of PGE2 begins with membrane phospholipids being converted to arachidonic acid (AA) by phospholipase A2 (PLA2).
There is unequivocal evidence for a humoral signaling pathway by which proinflammatory cytokines, through their binding to receptors on brain endothelial cells, evoke fever by eliciting prostaglandin E2 synthesis in these cells.
The circumventricular organ system (CVOS) is neuronal tissue lying outside the blood-brain barrier that has a key role in initiating the communication sequence responsible for the synthesis of febrile prostaglandins. When pyrogenic cytokines are detected by the CVOS, prostaglandin synthesis, especially cyclooxygenase-dependent prostaglandin E2, is induced, activating the febrile response. Once the appropriate signal is received by the hypothalamus, autonomic, endocrine, and behavioral processes are activated until the hypothalamic set-point is reset downward as a consequence of a reduction in pyrogen content or antipyretic therapy, with subsequent heat loss.
The discovery that several proinflammatory cytokines act as endogenous pyrogens and that other cytokines can act as antipyretic agents provided a link between the immune and the central nervous systems and stimulated the study of the central actions of cytokines. Prostaglandin E2 has been found to exert a negative feedback on the release of the cytokines, thus terminating the mechanisms that initially induced the fever.
At fever temperature (39°C or 102.2°F) compared to normal body temperature (37°C), T helper cells, which direct other immune cells by releasing signaling molecules called cytokines, produced more cytokines than at the lower temperature. At the same time, regulatory T cells, which suppress immune responses, were less effective at the higher temperature. All the types of T cells evaluated proliferated more at the higher temperature. These led to an enhanced inflammatory state at fever temperature.
Acute-phase response is the term used for haematological, endocrinological, and metabolic changes that follow (within hours or days) the onset of fever in response to infections or local damage to a tissue. Fever is one of the most common symptoms of inflammatory disease and is a CNS-mediated component of the acute phase reaction, an adaptive suite of responses to systemic inflammatory stimuli.
Although infection is the most common cause of fever, fever is also a common finding in hypersensitivity reactions, autoimmune diseases, and malignancy.
Although the person's temperature increases, there is often a feeling of cold. Other responses include sickness behavior, which includes malaise, increased pain sensitivity, changes in wake-sleep cycles and feeding. These accompanying symptoms are mediated by many of the same cytokines that drive the thermal response itself.
The resulting fever increases basal metabolic rate (BMR) by 13% for each 1°C rise. Indirect calorimetry has been employed to demonstrate that fever and infection result in increased metabolic heat production. This response contributes, with reduced dietary energy intake, to negative energy balance in the infected host and constitutes a metabolic "cost."
Fever further increases energy expenditure and muscle loss in otherwise highly hypermetabolic patients. These findings demonstrate the association of severe fever with further increase in energy expenditure and muscle protein catabolism in otherwise hypermetabolic burned children. This suggests a possible metabolic benefit in attenuating fever in such patients.
All infections, no matter how mild, decrease nutrient intakes and increase nutrient losses even when subclinical. The losses include decreased intestinal absorption, direct loss of nutrients in the gut, internal diversion for metabolic responses to infection, and increased basal metabolic rate when fever is present. In this way, infection influences not only protein and energy status but also that of most other nutrients.
There is still limited clinically applicable data during infection that clearly delineates the role of nutrition during an active viral vs. bacterial infection. Based on contrasting findings in different models of viruses and bacteria, the macronutrient and micronutrient needs may depend more on specific infectious organisms that may not be generalizable as bacterial versus viral.
The extent to which water intake and requirements are determined by energy intake and expenditure is understudied, but in the clinical setting it has long been practice to supply 1 ml per kcal administered by tube to patients unable to take in food or fluids. Factors such as fever or other drivers of increased metabolism affect both energy expenditure and fluid loss and are thus linked in clinical practice.
The following nutrients have been examined in peer-reviewed literature for their roles in immune function as it pertains to infectious and febrile illness. The discussion separates traditional use from scientific evidence where applicable.
Scientific Evidence: A large number of randomized controlled intervention trials with intakes of up to 1 g of vitamin C are available. These trials document that adequate intakes of vitamin C ameliorate symptoms and shorten the duration of respiratory tract infections including the common cold. Furthermore, vitamin C reduces the incidence and improves the outcome of pneumonia, malaria, and diarrhea infections, especially in children in developing countries.
Key dietary components such as vitamins C, D, E, zinc, selenium and omega-3 fatty acids have well-established immunomodulatory effects, with benefits in infectious disease. Research indicates that Vitamin C may have a mitigating effect on viral respiratory infections.
An overview of systematic reviews and meta-analyses found that 1 to 2 g per day of vitamin C demonstrated efficacy both in C-reactive protein (CRP) reduction and endothelial function. Evidence for vitamin C specifically reducing fever temperature or fever duration in otherwise healthy adults is limited; much of the evidence pertains to duration and severity of associated symptoms rather than to temperature itself.
Scientific Evidence: Vitamin D also plays a role in both innate and adaptive immune responses. Vitamin D (1,25-dihydroxyvitamin D) exerts its effects through the vitamin D receptor (VDR) and is a potent stimulator of the immune system. The VDR is expressed by most cells of the immune system, including T cells, antigen-presenting cells, and macrophages. In addition, vitamin D induces cathelicidins, a group of antimicrobial peptides produced by neutrophils, macrophages, and epithelial cells.
Vitamin D deficiency is associated with increased autoimmunity and increased susceptibility to infection. The evidence found in the literature shows that deficiency of one or more of zinc, vitamin C, and vitamin D compromises the immune response, making an individual more vulnerable to viral infections and to a worse disease prognosis.
An overview of meta-analyses and systematic reviews found that an intake of 50,000 IU/month of vitamin D showed efficacy in reducing CRP. Evidence strength is predominantly observational and mechanistic; large-scale RCTs specifically targeting fever duration or fever reduction via vitamin D supplementation are lacking.
Scientific Evidence: Zinc stands out for having immunomodulatory functions and for playing roles in preserving physical tissue barriers. Randomized controlled trials document that adequate intakes of zinc ameliorate symptoms and shorten the duration of respiratory tract infections including the common cold.
A dose of 50 mg/day of elemental zinc supplementation showed positive results in CRP reduction. As with vitamin C, evidence relates more to associated infection symptoms and immune markers than to direct antipyretic effects, and applies primarily in populations with baseline deficiency.
Scientific Evidence: Iron deficiency affects various aspects of immune function, including respiratory burst, bacterial killing, natural killer cell activity, T lymphocyte proliferation, and T helper 1 cytokine production. There is consensus that iron deficiency increases susceptibility to infection, underscoring the importance of maintaining optimal iron levels for an effective immune response. However, the relationship between iron deficiency and infection susceptibility is complex, and studies on the antiviral role of iron yield conflicting results.
Scientific Evidence: A randomized, double-blind placebo-controlled trial found that probiotics were associated with a shorter average duration of cold symptoms (4.5% vs. 6.7% for placebo). At post-treatment assessment, fever and muscle pain occurred in 20% of participants in the probiotic group vs. 28% in the placebo group.
In a randomized, double-blind, placebo-controlled trial in children with brucellosis, the difference between probiotics group and placebo group for the duration of fever was statistically significant (P=0.02), and overall probiotics intake had a beneficial impact on clinical status and the body's antioxidative defense system in pediatric patients. Evidence in this area is preliminary and population-specific.
Traditional Use: Anecdotal accounts of willow bark extract as an anti-inflammatory drug have occurred since written records began (for example by Hippocrates); the first convincing demonstration of a potent anti-pyretic effect of willow bark containing salicylates was made by the English cleric Edward Stone in the late eighteenth century. Historical records demonstrate that bark extracts were used medicinally in the ancient world, in South America, Egypt, Classical Greece, and China.
Scientific Evidence: Willow (Salix species) bark extracts have been known for centuries to be anti-inflammatory, antipyretic, and analgesic agents. They are widely recognized throughout Europe and are used for conditions related to inflammatory conditions and flu symptoms, including fever and generalized pain. One of the main chemical active ingredients made from willow bark is salicin, which is metabolized in the human body into salicylic acid, the precursor of aspirin (acetylsalicylic acid); however, a complex mixture of polyphenols is thought to contribute to the overall effect of Salix extracts.
This landmark pharmacological history is the basis for the discovery of the actions and chemical structure of aspirin, and the development of non-steroidal anti-inflammatory drugs (NSAIDs), that are useful in treating inflammatory pain and fevers. Both flavonoids and polyphenols in willow bark were proven to be attributed to anti-inflammatory effects. The clinical evidence for willow bark specifically on fever is largely indirect; most modern RCTs have examined its analgesic and anti-inflammatory properties in arthritis and back pain rather than its antipyretic activity in febrile illness.
Traditional Use: The anti-inflammatory properties of ginger have been known and valued for centuries. During the past 25 years, many laboratories have provided scientific support for the long-held belief that ginger contains constituents with anti-inflammatory properties. Ginger has been used historically in Ayurvedic, Chinese, and Arabic traditional medicine as a diaphoretic (sweat-inducing) and antipyretic agent, typically administered as a decoction or tea.
Scientific Evidence: Numerous studies have demonstrated ginger's efficacy in mitigating inflammation through its bioactive compounds such as 6-gingerol, 6-shogaols, and zingerone, which modulate key inflammatory pathways. These compounds inhibit cyclooxygenase-2 (COX-2) and lipoxygenase (LOX) by reducing the production of pro-inflammatory mediators like prostaglandins and leukotrienes.
Ultrafiltration liquid chromatography mass spectrometry screening identified multiple gingerol and shogaol congeners as COX-2 ligands. Purified 10-gingerol, 8-shogaol, and 10-shogaol inhibited COX-2 with ICâ â values of 32 ÎŒM, 17.5 ÎŒM, and 7.5 ÎŒM, respectively. No inhibition of COX-1 was detected. Therefore, these compounds inhibit COX-2 but not COX-1, which can explain, in part, the anti-inflammatory properties of ginger.
In vivo, 6-shogaol inhibited leukocyte infiltration into inflamed tissue accompanied with reduction of edema swelling. In vitro and in vivo, 6-shogaol reduced inflammatory mediator systems such as COX-2 and iNOS, affected NF-ÎșB and MAPK signaling, and increased levels of cytoprotective HO-1.
It is critical to note that the mechanistic evidence for ginger is predominantly in vitro and animal-based. The current, evidence-based therapeutic indication of the dried ginger rhizome attributed by the Committee on Herbal Medicinal Products (HMPC) of the European Medicines Agency (EMA) as "a well-established use" is the "prevention of nausea and vomiting in motion sickness." It is also used as a traditional herbal medicinal product for the treatment of mild, spasmodic gastrointestinal complaints. The EMA does not currently list a fever-specific indication, and direct clinical trials on ginger's antipyretic activity in humans are very limited.
Traditional Use: Various parts of the elderberry plant (Sambucus spp.) have historically been used both as foods and as remedies for health problems. Specifically, the flowers and dried or cooked fruit ("elderflower" and "elderberry," respectively) have traditionally been used for respiratory problems such as colds and influenza. Elderberry has been used in folk medicine to treat colds and flu.
Scientific Evidence: A small number of studies have evaluated elderberry for colds, flu, and other upper respiratory infections. A randomized, double-blind, placebo-controlled clinical trial of 312 economy class air travelers found that placebo group participants had a significantly longer duration of cold episode days compared to those using elderberry extract.
Overall evidence quality for elderberry is limited. Most trials are small, and findings are primarily on symptom duration and severity rather than on fever temperature specifically. Elderberries have shown antibacterial and antiviral activities in vitro. Clinical translation of these in vitro effects remains uncertain.
Traditional Use: Archaeologists have discovered that the plant may have been used by Native Americans for hundreds of years. It has been used in Western herbal medicine as a general immune tonic and for reducing severity of cold and flu symptoms.
Scientific Evidence: Twenty clinical trials concerning efficacy of various echinacea preparations in various groups of the population were identified between 1995 and 2013. Evidence on echinacea's effect specifically on fever is indirect; most clinical research addresses cold and upper respiratory infection duration and severity. No clinical trials concerning safety of either echinacea or elderberry in pregnancy were identified in a systematic literature search, illustrating a gap in safety research for specific populations.
Scientific Evidence: A dosage of melatonin ranging from 5 to 25 mg/day showed good evidence of efficacy in reducing CRP, TNF, and IL-6 in a meta-analysis overview evaluating nutraceutical effects on inflammatory markers. Melatonin is not traditionally classified as a nutritional intervention for fever; rather, it has been studied for its broader anti-inflammatory effects. Evidence in the context of fever specifically remains limited and largely preliminary.
Factors such as fever or other drivers of increased metabolism affect both energy expenditure and fluid loss and are thus linked in clinical practice. Adequate fluid intake is consistently discussed in the clinical literature as essential during febrile illness due to increased insensible losses from sweating and elevated respiratory rate. No specific evidence-based upper threshold for fluid intake during fever in otherwise healthy adults has been established in large RCTs.
Fever and infection result in increased metabolic heat production. This response contributes, with reduced dietary energy intake, to negative energy balance in the infected host. An increase of 12 to 30 mg per day in urinary 3-methylhistidine (a marker of muscle protein catabolism) has been reported during the peak fever response. The total nitrogen increase in the urine was the equivalent of 1.14 g of protein per kg/day, or about 7 kcal/kg/day. Whatever its contribution to resistance to infection may be, fever has a metabolic cost.
The metabolic effects of fever are context dependent, and various host-specific factors (e.g., age, baseline nutritional status, immune status, comorbidities) and illness variables (phase, duration, and severity of illness) play a significant role in determining the outcome.
There is yet little understanding of the mechanisms by which factors such as nutritional status and ambient temperature shape the response to the peripheral immune challenge. This represents a recognized gap in the current literature.
The febrile response induces somnolence as part of the broader sickness behavior. Sickness behavior includes malaise, increased pain sensitivity, and changes in wake-sleep cycles and feeding. These behavioral changes are considered adaptive, allowing the body to conserve energy for immunological defense rather than physical activity, though direct experimental evidence in human febrile populations specifically examining rest duration as an outcome is limited.
The popular adage has been examined in nutritional science. There is still limited clinically applicable data during infection that clearly delineates the role of nutrition during an active viral vs. bacterial infection. Based on contrasting findings in different models of viruses and bacteria, the macronutrient and micronutrient needs may depend more on specific infectious organisms that may not be generalizable as bacterial versus viral. Thus, this phrase is not supported by robust clinical evidence and should not be used as a nutritional guideline.
Several important limitations run across this body of literature:
Intraperitoneal administration of A. spectabilis methanolic leaf extract at 200â400 mg/kg demonstrated reduction of body temperature in a yeast-induced hyperthermia animal model. Antipyretic activity is among the confirmed in vivo bioactivities cited in peer-reviewed pharmacological reviews. It is also traditionally used for fever in Himalayan folk medicine.
Andrographis paniculata has been used in TCM to treat fever and infections for centuries. A randomized double-blind trial found andrographis as effective as paracetamol for reducing fever in 152 pharyngotonsillitis patients. Its active constituent andrographolide demonstrates antipyretic effects comparable to acetaminophen in animal models via COX-2 inhibition.
Andrographolide, the principal diterpene lactone from Andrographis paniculata, demonstrates antipyretic effects comparable to paracetamol in animal studies. It reduces fever by inhibiting COX-2 expression and suppressing pyrogenic cytokines such as IL-1ÎČ and TNF-α. It has a long history of use in TCM for febrile illness.
Baicalin, the principal flavonoid glucoside from Baikal Skullcap (Scutellaria baicalensis), demonstrates well-documented antipyretic activity in animal studies via inhibition of pyrogenic cytokines and the NF-ÎșB pathway. It significantly reduces body temperature in LPS- and yeast-induced fever models in rats and rabbits. It is a recognized antipyretic component of multiple TCM formulas.
Baikal Skullcap (Scutellaria baicalensis) is one of the 50 fundamental herbs in TCM, traditionally used for 'heat-clearing' and febrile conditions. Its primary active compound, baicalin, has demonstrated significant antipyretic activity in animal models by reducing pyrogenic cytokines and inhibiting NF-ÎșB signaling.
Alstonia scholaris bark has been studied in rodent models for antipyretic activity. An ethanolic leaf extract was compared against paracetamol in a brewer's yeast-induced pyrexia model in albino Wistar rats, demonstrating significant fever reduction at 50â200 mg/kg doses. Traditionally, the bark has long served as a substitute for quinine in intermittent and remittent fevers across Ayurvedic and folk medicine systems.
B. falcatum root decoctions and extracts have demonstrated antipyretic effects in multiple animal models, including fever induced by bacteria, typhoid vaccine, and fermented milk. Nasal gel and spray formulations of the essential oil also produced dose-dependent fever reduction in rats and rabbits. This is one of the herb's oldest and best-documented preclinical actions; human trial data remain absent.
C. crista is commonly known as 'Fever nut' and has documented antipyretic activity in preclinical studies. Seed kernel extracts showed fever-reducing effects in animal models. Traditional Ayurvedic use for fever, including malarial fever, is extensively documented.
Cinchona bark is the source of quinine, the historic antimalarial drug used worldwide for centuries to treat malarial fever. Quinine's use for fever of malarial origin is one of the best-documented examples of natural antipyretic therapy in medical history. It remains a WHO-approved treatment for severe malaria.
Several Clematis species have demonstrated antipyretic activity in rodent models. C. vitalba aerial parts (vitalboside) suppressed Freund's adjuvant-induced hyperthermia in animals. C. brachiata aqueous extract significantly reduced Brewer's yeast-induced elevated body temperature in male rats. Traditionally, Clematis was used in TCM (C. armandii/C. montana, 'mu tong') to 'decrease fever and induce urination.'
Elder (Sambucus nigra) flowers are a well-known traditional antipyretic and diaphoretic used across European folk medicine for febrile illness. PMC research confirms elderflower flavonoids promote sweating and possess antipyretic properties. It is frequently used for feverish colds and influenza.
Elderberry (Sambucus nigra) has been used in folk medicine as a diaphoretic and antipyretic agent for generations. Its flowers contain flavonoids that promote sweating and reduce fever, and PMC-published research confirms its antipyretic and diaphoretic properties. It is commonly used in European herbal medicine for febrile conditions.
European Elder (Sambucus nigra) is a classical diaphoretic and antipyretic herb in European traditional medicine, used for centuries to treat fever accompanying colds, flu, and respiratory infections. Its flowers contain flavonoids with confirmed antipyretic and diuretic properties per peer-reviewed literature.
Feverfew (Tanacetum parthenium) has a documented traditional use for fever dating to ancient Greek and European herbalism, reflected in its very name. Its sesquiterpene lactones, especially parthenolide, inhibit prostaglandin synthesis and COX enzymes, confirming antipyretic activity in experimental studies. NCCIH acknowledges its traditional use for fever.
Gardenia jasminoides (Fructus Gardeniae) has been used for millennia in TCM as a primary antipyretic herb. Modern pharmacological evidence shows geniposide exerts antipyretic effects in febrile rats by modulating the TLR4/NF-ÎșB signaling pathway, a mechanism published in the Journal of Ethnopharmacology (2024). The antipyretic mechanism has also been explored via plasma metabolomics in yeast-induced fever rat models.
Antipyretic activity is one of the most historically consistent and pharmacologically documented properties of green chiretta. Clinical trials in pharyngitis/URTI demonstrate fever reduction; preclinical data confirm central and peripheral antipyretic mechanisms mediated by andrographolide. The herb has been a household antipyretic remedy in South and Southeast Asia for centuries.
H. spicatum has documented antipyretic activity in preclinical studies. Essential oils from the rhizome suppressed Brewer's yeastâinduced pyrexia in animal models. It is also classified in Ayurveda as 'jwaraghna' (antipyretic) and is a traditional remedy for fever across folk medicine systems in South Asia.
Honeysuckle is one of the most-documented traditional antipyretics in TCM, used for 'warm disease' fever for over 1,500 years. Pharmacological studies confirm antipyretic activity of L. japonica extracts. It features prominently in the TCM emergency antipyretic formula studied in a clinical analysis of 906 febrile cases.
Antipyretic activity of H. indicus is documented in multiple in vivo preclinical studies and is one of its confirmed pharmacological properties. Traditionally, the plant's diaphoretic action (inducing perspiration) is the classical mechanism for fever reduction in Ayurveda. Animal studies validate antipyretic effects.
Lophatherum leaf has a long-documented antipyretic role in TCM and pharmacological studies confirm antipyretic activity in extracts. Its flavonoids and phenolic acids are identified as the primary active constituents responsible for reducing fever. It is listed in the Chinese Pharmacopoeia for this indication. Animal and in vitro studies support the antipyretic mechanism, though no rigorous human RCTs have been published.
C. rotundus has well-documented antipyretic activity in preclinical studies, particularly attributable to alpha-cyperone and sesquiterpene constituents. It is listed as an antipyretic in Ayurveda, TCM, and Unani systems. Animal models confirm reduction of yeast- and lipopolysaccharide-induced fever.
Parthenolide is the principal sesquiterpene lactone from Feverfew responsible for its antipyretic, anti-inflammatory, and analgesic properties. It inhibits COX enzymes and arachidonic acid metabolism, reducing fever-mediating prostaglandins. Experimental studies confirm its antipyretic activity consistent with traditional feverfew use.
P. kurroa rhizome extracts have demonstrated significant antipyretic activity in rodent models at doses of 260â520 mg/kg. Ayurvedic and Tibetan traditions list it prominently as an antipyretic for 'chronic reoccurring fevers.' The preclinical evidence supports the traditional use, though human RCTs are absent.
Pistagremic acid, a triterpenoid isolated from P. integerrima, has demonstrated antipyretic activity in animal models. The galls are documented in Ayurvedic formulations for 'jwara' (fever) and multiple ethnopharmacological reviews confirm traditional antipyretic use. In vivo studies confirm the preclinical basis.
Salicin, the natural phenolic glycoside found in willow bark and related plants, has been used to treat fever since antiquity. It is metabolized in the body to salicylic acid, which inhibits COX enzymes and reduces prostaglandin-mediated fever. Its isolation in 1828 led directly to the development of aspirin.
Antipyretic activity has been documented for S. indicus in preclinical studies, and traditional Ayurvedic and ethnobotanical use for fever is well-established. Animal studies confirm antipyretic effects at tested doses.
Sweet wormwood (Artemisia annua, Qing Hao) has been used in TCM for nearly 2,000 years as an antipyretic herb, particularly for malarial fever. Its active compound, artemisinin, is the basis for the most effective current antimalarial drugs, which rapidly reduce fever in malaria. The 4th-century Ge Hong medical text specifically describes its use for fever relief.
Antipyretic (fever-reducing) activity is one of the most extensively documented pharmacological properties of Swertia chirayita, supported by preclinical animal studies and centuries of traditional use across South Asian and Tibetan medicine. The earliest Ayurvedic reference to chirata (Charaka Samhita) describes its use as a Jvaraghna (antipyretic). Animal studies confirm significant fever reduction.
T. cordifolia has documented antipyretic properties supported by both traditional use and experimental evidence. A 95% ethanolic extract and hexane/chloroform fractions of the stem display antipyretic activity in animal models. It is traditionally prescribed in Ayurveda for malaria, dengue, and general febrile conditions.
White willow bark (Salix alba) has been used for over 2,000 years to treat fever, referenced by Hippocrates in ancient Greece and in Chinese medicine since 500 BCE. Its active compound salicin is metabolized to salicylic acid, which inhibits COX enzymes to reduce fever. Modern pharmacopeias and evidence databases confirm its antipyretic mechanism.
Willow species (Salix spp.) have been used for at least 2,000 years for fever, pain, and inflammation, recommended by Hippocrates and Paracelsus. Their bark contains salicin, which metabolizes to salicylic acid and inhibits COX enzymes to reduce fever. All Salix species share this salicin-based antipyretic mechanism.
Yarrow is approved by the British Herbal Pharmacopoeia and the German Commission E for fever management. Its diaphoretic action â promoting perspiration via peripheral vasodilation â is its classical antipyretic mechanism and has centuries of documented ethnopharmacological use across Europe, North America, and Asia.
Multiple documented traditional medicine sources confirm that roasted acai seeds consumed as tea are a longstanding Amazonian remedy for fever. NCCIH and other ethnobotanical sources record this use. No human clinical trials have evaluated acai specifically for fever.
Ajwain is traditionally used as a diaphoretic (sweat-inducing) agent to break fevers in Ayurvedic and Unani medicine. It is listed among its ethnopharmacological indications for fever and influenza in multiple traditional medicine compilations. No human clinical evidence exists.
Alkanet herbal tea is documented in European folk medicine as a diaphoretic used to promote perspiration and break prolonged fevers. This use appears consistently across multiple traditional herbal references. No clinical or pharmacological studies have investigated this antipyretic effect.
Allspice has long-standing traditional use as an antipyretic in Caribbean and Central American folk medicine. Published phytochemical reviews list antipyretic activity among the documented biological properties of P. dioica. No human clinical trials have been conducted.
A. galanga rhizomes are recorded across multiple traditional systems â TCM, Ayurveda, and Middle Eastern â as an antipyretic for treating fever, particularly 'intermittent fevers.' Preclinical data corroborate analgesic and antipyretic properties. No clinical RCTs for fever have been conducted.
Anemarrhena asphodeloides (Zhi Mu) has been used for over 2,000 years in TCM as a primary antipyretic herb. It is classified as 'cold' and bitter, and historically applied to febrile diseases, high fever with intense thirst, and heat-excess conditions. The classic formula Bai Hu Tang pairs it with gypsum specifically for high fever.
Annatto seeds and leaves have been used as antipyretics across multiple indigenous cultures of South America and Southeast Asia. Preparations include boiled leaf poultices applied to the head and body, and decoctions taken orally. No human clinical trials evaluating antipyretic efficacy have been published.
The root, rhizome, stems, and leaves of Strobilanthes cusia have long been used in Traditional Chinese Medicine (TCM) as antipyretic-alexipharmic agents. A decoction is documented for treating fever-caused rashes and infectious fevers. Animal studies confirm the methanol leaf extract attenuates LPS-induced pyrexia in rats.
Cherokee traditional medicine documented the use of aster tea preparations to help reduce fevers. This use is recorded in ethnobotanical literature but is not supported by formal pharmacological or clinical research on Aster root specifically for fever reduction.
Bamboo leaves, roots, and bamboo juice are used in TCM and Ayurveda as febrifuges (fever reducers). Bamboo is classified as 'cooling' in TCM and is used to 'clear heat' in feverish illnesses. Bamboo shavings and tabasheer are specifically indicated for high fevers associated with phlegm-heat in classical formulations.
Baobab is one of the best-documented traditional antipyretics in African ethnomedicine. Leaves, bark, and fruit pulp have all been used as febrifuges across sub-Saharan Africa and Egypt for centuries. The HerbalGram ethnopharmacological review documents that the bark combined with dried leaves was made into a preparation called 'lalo' specifically to induce sweating and reduce fever, and that bark has been used as a substitute for quinine in malarial fever.
Barberry has documented traditional use as an antipyretic (fever-reducing) herb in Persian, European, and Ayurvedic medicine. The Herbal Resource and multiple ethnobotanical sources document its use for high fever. Berberine's anti-inflammatory properties provide pharmacological plausibility.
Basil is used as a febrifuge (fever-reducing agent) across Ayurveda, traditional Chinese medicine, and African folk medicine. Traditional preparations include leaf teas and decoctions. The sudorific (sweat-inducing) properties attributed to basil are thought to lower fever, but clinical human evidence is lacking.
Bayberry has documented traditional use as a febrifuge in both Native American and early American colonial medicine. The Choctaw people boiled bayberry leaves and drank the decoction specifically to treat fever. The compound myricitrin is reported to have antipyretic properties and promotes diaphoresis (sweating), a classical means of fever resolution in herbal traditions.
Belleric myrobalan is classified as an antipyretic in multiple traditional medical systems including Ayurveda, Unani, and Siddha. Classical Ayurvedic texts reference its use for Jvara (fever). The fruit is listed among its documented traditional actions as antipyretic in pharmacological literature reviews. No clinical human trials on T. bellirica for fever are available.
Berberine-containing plants such as Coptis chinensis (Huang Lian) and Berberis species have been used for millennia in Traditional Chinese Medicine and Ayurveda to treat febrile and 'heat' conditions. This use is documented in classical TCM texts but lacks dedicated modern human clinical trial evidence for antipyretic effect.
Birch leaf infusions have been used traditionally in European folk medicine to help reduce fever. The salicylate content of birch (particularly methyl salicylate in bark) provides a plausible pharmacological basis for antipyretic activity. No clinical trials specifically on birch for fever management have been identified.
Black cumin is documented in Unani, Islamic, and Ayurvedic traditional medicine as a remedy for fever. Clinical reviews note that N. sativa supplementation decreases body temperature in allergic patients, and antipyretic-relevant anti-inflammatory mechanisms have been identified experimentally.
Black pepper is used in Ayurvedic and traditional South and Southeast Asian medicine for fever management, particularly for cold-type or damp fevers associated with phlegm and sluggish digestion. Its diaphoretic (sweat-promoting) traditional action is part of the rationale.
Blessed thistle has been used since the Middle Ages as a diaphoretic (sweat-inducing) herb for the management of fever. Warm infusions were taken to induce perspiration and reduce body temperature during febrile states. This use is well documented in historical herbals including Turner's Herbal (1568), with no supporting clinical trials.
Boneset (Eupatorium perfoliatum) is one of North America's most historically important febrifuge herbs, used by multiple Native American tribes and later American physicians for fever, influenza, and dengue ('break-bone') fever. It is documented as an antipyretic by the Cherokee, Delaware, Menominee, Seminole, and other tribes. Clinical evidence remains absent but traditional use is extensively documented.
Borage has a long-established traditional use as a diaphoretic (sweat-inducing) herb for fever management. Leaf infusions were used to promote perspiration, cooling the body during febrile illness. This is recorded across European, Mediterranean, and Unani traditions but has not been studied in clinical trials.
Classical Ayurvedic texts list Boswellia resin as indicated for Jwara (fever). This represents traditional use without corroborating human clinical trial evidence for antipyretic activity.
Reduction of fever is a well-documented traditional use of buchu among the Khoisan people of South Africa and later European settlers. The herb is classed as a diaphoretic (sweat-inducing) in herbal pharmacopeias, which aligns with traditional fever management. No clinical studies confirm antipyretic efficacy.
Burdock seeds (Fructus Arctii / Niu Bang Zi) have a well-documented use as a cooling diaphoretic in TCM for fever management, as well as in European traditional medicine. The seeds are used to disperse wind-heat and reduce febrile conditions. No clinical trials on burdock specifically for fever reduction in humans have been identified.
Butterbur has a well-documented history of use as an antipyretic dating to the Middle Ages in Europe. Historical sources consistently cite its use to break fevers. This is attributed to its anti-inflammatory properties, though no modern clinical trials have assessed this indication.
Cajuput oil is documented across Southeast Asian and Ayurvedic traditional medicine as a febrifuge (fever reducer), used to promote perspiration and lower body temperature. It is traditionally applied topically in diluted solution or administered in small diluted oral doses. No clinical trials in febrile human subjects have been conducted.
Calendula flowers have a documented traditional use as a diaphoretic and antipyretic across multiple ethnomedicinal traditions. The flower heads have been used in tinctures and infusions to promote sweating and reduce fever. No human clinical trials for fever have been conducted.
Camphor has been used as an antipyretic in traditional medicine systems across multiple cultures for centuries. The PMC 2025 comprehensive review documents camphor's traditional use for fever reduction, and Ayurvedic texts dating to the 7th century reference camphor for fever management. No modern human clinical trials have validated this specific use.
Cassia bark is documented in Ayurvedic and folk medicine traditions as a remedy for fever, and RxList/WebMD and authoritative TCM monographs include fever among traditional uses. There are no specific clinical trials confirming antipyretic effects of C. cassia bark in humans.
Cat's claw has been used traditionally by Peruvian indigenous peoples to treat fevers, and this application is cited in major ethnobotanical databases and the NIH/NCBI LiverTox monograph. The herb is described as used 'in the treatment of fever, fatigue, muscle and joint aches.' No clinical trials specifically on fever have been conducted.
Cayenne pepper has traditional use as a diaphoretic (sweat-inducing) agent, used to support the body during fever. It is documented in traditional herbal medicine to raise skin temperature and stimulate sweating, which is considered to aid in fever resolution. No clinical RCTs confirm antipyretic efficacy.
A. aspera has extensive documented traditional use for fever, particularly malarial fever, across Indian, African, and other tropical folk medicine systems. Antipyretic activity has been mentioned in pharmacological reviews but not validated in a standalone controlled study.
Chamomile has been used as an antipyretic since ancient Egyptian times and by Greek and Roman physicians. Germany's Commission E has approved chamomile for treating fevers and colds, reflecting centuries of documented traditional use. Phytochemical reviews note antipyretic activity in the plant's profile, but controlled human clinical trials specifically for fever reduction are lacking.
Chickweed has a traditional classification as a refrigerant and antipyretic herb, used in hot infusion form to reduce fevers across European and Asian herbal traditions. Antipyretic activity has also been noted in preclinical pharmacological reviews. No clinical trials exist.
Chrysanthemum has a centuries-long history in Traditional Chinese Medicine (TCM) as a 'cooling' herb used to clear internal heat and reduce fever. It is listed in classical texts including the Shennong Bencao Jing. No rigorous human clinical trials have specifically evaluated its antipyretic action.
Cleavers has traditional use as a febrifuge (refrigerant), documented in European and North American herbalism for fever accompanying viral exanthems and inflammatory conditions. It was used as a cooling diuretic to manage feverish states. No clinical studies have evaluated this use.
Clove has traditional use as an antipyretic in Ayurvedic, Unani, and folk medicine. Eugenol's antipyretic property is documented in pharmacological literature, though human clinical trials are absent.
Coix seed is classified in TCM as having a 'cool nature' and is used to clear internal heat, including fever associated with dampness or inflammatory conditions. This is a documented traditional use, but no modern clinical trials test coix for fever reduction in humans.
Coltsfoot leaves have documented traditional use in Austria and across Europe as a diaphoretic agent to support the body during febrile states. The herb has been described as a mild diaphoretic helping the body to sweat during feverish conditions. No clinical evidence exists.
Coptis chinensis is one of the primary 'heat-clearing' herbs in TCM, used for thousands of years for high fevers, especially those with a 'damp-heat' pathology. It is listed in foundational TCM texts for treating fevers, and modern research characterizes it as a major antipyretic herb. Controlled human antipyretic trials are not available.
Cumin has been documented in historical European, Middle Eastern, and Egyptian herbal traditions as a remedy for fever. Herbal texts describe cumin as having 'cooling' properties used to reduce febrile states. No clinical or preclinical evidence specifically supports antipyretic activity.
Dandelion has documented traditional use for fever across multiple herbal traditions including Ayurveda, TCM, and European herbalism. The 16th-century physician Leonhard Fuchs documented its use for fever. No human clinical evidence exists for a direct antipyretic effect.
Devil's Claw has a long-established traditional use for fever reduction among indigenous southern African peoples. It is documented in multiple ethnobotanical records as a febrifuge. No clinical trials have specifically evaluated antipyretic efficacy in humans.
Dog Rose has a documented traditional use as an antipyretic across European herbal medicine systems, with rosehip tea used to manage fever and febrile conditions. This is classified as traditional as no human clinical trials specifically investigating feverduc reduction have been conducted.
American dogwood bark (Cornus florida) has a centuries-long traditional use as an antipyretic, used extensively as a quinine substitute for malarial fevers by Native Americans, colonial physicians, and Civil War soldiers. Iridoid glycosides and bitter compounds provide some mechanistic plausibility. No modern clinical evidence exists.
Echinacea has a well-documented traditional use for fever in both Native American medicine and European herbal practice. It was used by numerous Native American tribes for febrile conditions, and 19th-century Eclectic physicians employed it for infections with fever. NCCIH and European regulatory authorities recognize this traditional use.
Echinacea purpurea is used in European and North American traditional medicine for fever associated with colds, flu, and upper respiratory tract infections. Native Americans used related Echinacea species as antipyretics. The German Commission E approves E. purpurea for febrile infections and upper respiratory conditions.
E. littorale is classified as an antipyretic (febrifuge) in Ayurveda, Siddha, and Unani systems, and this is documented in multiple pharmacognosy reviews. It has been used as a bitter tonic for fever reduction in Indian traditional medicine for centuries. Published human antipyretic clinical data are not available.
Eucalyptus has a longstanding traditional use as an antipyretic across multiple cultures, reflected in its common name 'Australian fever tree.' Indigenous Australians and European herbal practitioners historically used eucalyptus preparations to reduce fever. Direct clinical evidence for antipyretic activity in human trials is lacking; preclinical data and traditional documentation support this use.
Reducing fever is one of Forsythia's primary traditional indications, documented in classical TCM texts including the Shen Nong Ben Cao. It forms part of classic antipyretic formulas such as Yin Qiao San and Shuanghuanglian, which have been used clinically in China for febrile illnesses. The formula Maxing Shigan decoction-Yinqiao powder (containing Forsythia) was shown in a clinical study to resolve fever in H1N1 influenza patients.
Fritillary is documented across multiple traditional sources as a treatment for fever, consistent with its TCM classification as a 'cold-natured' herb that clears heat. The Springer Nature genus review and ScienceDirect review of F. thunbergii both list fever among traditional indications. No clinical trials address this use.
Treating fever is one of the oldest and most consistently documented traditional uses of Gardenia jasminoides (Zhizi) in TCM, Kampo, and Korean traditional medicine. It is recorded in the Shennong Herbal (Dong Han dynasty, ~25â220 AD) and Chinese Pharmacopoeia for clearing heat and reducing fever. Geniposide has antipyretic properties in pharmacological frameworks, though formal clinical antipyretic trials are absent.
Garlic has documented traditional use for fever in multiple cultures, including Chinese, Japanese, and African ethnobotanical traditions. In China, garlic tea was recommended for fever, headache, cholera, and dysentery; in Japan, garlic-containing miso soup addressed fever and sore throat. No human RCTs specifically test garlic as an antipyretic.
Reduction of fever is one of the oldest recorded uses of gentian root, cited in European herbal traditions as far back as Hildegard von Bingen (12th century) and in subsequent pharmacopeial historical records including the EMA assessment report. The antimalarial compound gentianine from gentian has antipyretic properties in some traditions. No clinical trials validate this use.
In TCM, Qin Jiao (G. macrophylla) is a classical herb for 'deficient heat,' including low-grade fevers, afternoon fevers, steaming bone disorder, and night sweats. This use is documented in the Chinese Pharmacopoeia and classical texts. The compound gentianine has been noted in broader Gentiana research for antipyretic properties.
Geranium has documented traditional use for fever management in African, Indian, and other herbal medicine systems. It is listed in ethnobotanical records for use in fevers, colds, and tuberculosis. No clinical trial evidence is available.
Ginger (Zingiber officinale) has been used in TCM as Sheng Jiang to 'release the exterior' and address early-stage febrile illness with chills, and in Ayurveda for fever management. Small clinical and laboratory studies suggest mild antipyretic and anti-inflammatory effects, though results are inconsistent and evidence quality is low.
G. littoralis has been documented as an antipyretic in traditional Chinese, Japanese, and Korean medicine for thousands of years. Classical TCM texts classify it as a heat-clearing herb. No controlled clinical or preclinical antipyretic studies were identified in peer-reviewed literature.
Goldenrod has traditional use as a diaphoretic for managing fever in colds and flu, documented in European and North American herbal traditions. Hot infusion of the herb is taken to promote perspiration and support fever resolution. Canadian folk medicine specifically documents its use as a febrifuge. No clinical trials have assessed this use.
Goldenseal has a traditional use as an antiperiodic (fever-reducing) agent, documented in Eclectic and Native American medicine. The PubMed-indexed Merck Manual professional monograph notes its traditional use as a tonic and antiperiodic.
Amla is documented in traditional Ayurvedic and folk medicine across India and Asia as a remedy for fever. Jinfiniti and traditional sources confirm this use. Mechanistic antipyretic effects via anti-inflammatory pathways are plausible but unconfirmed in clinical trials.
Native American tribes, particularly via the healer Joe Pye, traditionally used gravel root as a diaphoretic to induce sweating and break fevers, including typhus. This use is well-documented historically but lacks clinical study.
Hibiscus sabdariffa and H. rosa-sinensis have a documented history of traditional use as antipyretic agents across Africa, Asia, and the Americas. Preclinical pharmacological data support analgesic and antipyretic activity, but no human RCTs specifically investigating fever reduction have been published.
H. antidysenterica seeds and bark are classified as febrifuge in Ayurvedic, Unani, and Bangladeshi traditional medicine. The plant is an ingredient in classical fever formulations such as Kutajarishta. No modern clinical studies specifically evaluating antipyretic efficacy in humans have been identified.
Holly leaf (Ilex aquifolium) has a long-documented history in European folk medicine as a febrifuge. Leaves were classified as diaphoretic and febrifuge in traditional herbal texts, and infusions were consumed to reduce intermittent fevers. No clinical trials have confirmed this use in humans.
Horehound has a long-standing traditional reputation as a diaphoreticâpromoting perspiration to assist in fever management. This use is documented across European, North African, and Middle Eastern herbal traditions. No controlled clinical studies on horehound for fever reduction exist.
Horse chestnut leaves have a documented history of traditional use as a fever-reducing (antipyretic) remedy in European and Asian herbal medicine. This use is not supported by human clinical trials. Historical records note the bark was used as a substitute for cinchona (quinine) in treating intermittent fevers.
Horseradish root has a traditional use as a diaphoretic and antipyretic in fever management. Infusions of the root are historically recorded for treatment of fevers and flu. Clinical observations in herbal tradition describe it as reducing fever. No clinical trials exist; evidence is traditional and ethnobotanical.
Traditional use of hyacinth bean to reduce fever is documented across multiple independent ethnobotanical traditions including the Philippines, China, and parts of Africa. It is listed as a febrifuge in ethnobotanical compendia and the USDA plant guide. No clinical or controlled animal studies specifically evaluating its antipyretic effect have been identified.
Hyssop is traditionally recognized as a febrifuge (fever-reducing herb) due to its diaphoretic (sweat-promoting) action. It stimulates perspiration, which drives heat from the body core to the periphery. It has historical use in scarlet fever, measles, and other febrile conditions.
Impatiens species are recorded in ethnobotanical literature as a traditional remedy for fever across multiple Asian and African traditions. This use is documented in comprehensive ethnobotanical reviews but lacks clinical study support.
Aegle marmelos has documented traditional use as an antipyretic agent in Ayurveda, Siddha, and Unani medicine. Bael leaf juice with honey was traditionally used to treat fever, and the fruit is listed as antipyretic in classical pharmacological property lists. Preclinical antipyretic studies are cited in reviews but are animal-based.
Traditional Ayurvedic and Unani texts explicitly list Boswellia gum resin as an antipyretic (fever-reducing) remedy. This is among the longstanding traditional indications documented in pharmacological literature, though no clinical trial evidence for this specific indication has been identified.
Acacia nilotica has extensive documented traditional use as an antipyretic across Africa and South Asia. Pharmacological studies demonstrate antipyretic activity in animal models via yeast-induced pyrexia tests. Antipyretic activity is listed among its most prominent pharmacological properties.
Antipyretic use is one of the oldest and most consistently documented traditional applications of T. cordifolia across Ayurveda, Siddha, and Unani systems. Ayurvedic texts describe it as 'Jwaranashana' (fever-alleviating). Preclinical studies have confirmed antipyretic activity, but controlled human trials specifically for fever are not available.
Indigo leaves have a centuries-old use as a febrifuge (fever reducer) in Ayurvedic, Siddha, and traditional Chinese medicine, documented from the Tang Dynasty onward. Multiple traditional pharmacopoeias list this indication. No human clinical trials on this specific use exist.
I. racemosa (pushkarmoola) is prominently featured in Ayurvedic classical texts as a remedy for jwara (fever), particularly vata-kapha fever. A 2023 review in Journal of Pharmaceutical Research International specifically examined its antipyretic significance in Ayurvedic literature. The roots are classified as febrifuge in Ayurvedic pharmacopeias and the leaves are used as a poultice to reduce fever.
Traditional use of jujube for fever is documented in Prophetic medicine, Islamic traditional medicine, Ayurveda, and TCM. Animal studies report antipyretic activity for Ziziphus extracts. No human RCTs for antipyretic effects have been identified.
Kudzu root has been used in TCM for over 2,000 years as a treatment for fever, and this is one of its most classically documented indications. It is described as 'cooling' in TCM energetics and used for febrile conditions, including fever accompanying cold and flu syndromes. Modern pharmacological evidence for antipyretic effects in humans is limited.
Lemon has a documented traditional use across multiple cultures for fever management, often combined with honey or warm water. The mechanism is proposed to involve immune support via vitamin C and mild diaphoretic effects, but no clinical trials specifically evaluate lemon for fever reduction.
Lemongrass is widely documented in traditional medicine as an antipyretic across Asia, Africa, and South America. In Tanzania, lemongrass tea is traditionally used to reduce fever. In Singapore, C. citratus is employed to alleviate cold and flu symptoms. Traditional use is documented in pharmacological reviews but human clinical antipyretic trials are absent.
The antipyretic use of common lilac leaves, flowers, and fruits is documented in North American materia medica pharmacognosy textbooks dating to the 19th century, and in European ethnopharmacological records from Poland, Bulgaria, Italy, and Greece. In vitro and animal studies support plausible biological mechanisms but no human clinical trials exist.
Eclectic physicians employed lobelia in febrile states as a relaxant to modify circulation and promote diaphoresis. King's American Dispensatory documents its use "in fevers...as a relaxant and to modify the circulation." This is an exclusively traditional indication with no modern clinical evidence.
Lychee has a documented history of traditional use for fever in folk medicine and traditional health systems. Caring Sunshine's ingredient monograph and TCM reference databases list fever reduction among lychee's traditional indications. No human clinical evidence for antipyretic activity of lychee preparations has been identified.
Malabar nut has been documented in Ayurveda, Unani, and Siddha traditions as an antipyretic agent used for fever. Multiple ethnopharmacological reviews list antipyretic as one of its pharmacological properties, though controlled human trials for fever are absent.
Mango bark has documented traditional use in Caribbean and African medicine as an antipyretic remedy for fever. In Ayurveda, specific mango seed kernel preparations (e.g., Patrangasav) are used for conditions associated with fever. The raw green fruit is traditionally used for heat exhaustion and cooling.
Mangosteen pericarp decoctions have been used as antipyretic traditional medicine in Southeast Asia for at least two centuries. Early records document its use as an anti-fever agent in the region. No human clinical trials have evaluated mangosteen specifically for fever.
The Mapuche people of Chile have used maqui berry and leaf preparations for centuries to reduce fever, a use documented in ethnobotanical records dating to 1844. Infusions of fresh maqui leaves were traditionally administered for high temperatures. No modern clinical studies of maqui's antipyretic effect in humans exist.
Marjoram is documented as an antipyretic in Moroccan folk medicine and in multiple ethnobotanical traditions. The anti-inflammatory properties of its phenolic constituents provide a mechanistic rationale for fever reduction.
Menthol has been used traditionally across multiple cultures to reduce the sensation of fever discomfort by producing a pronounced cooling sensation on the skin. It does not lower core body temperature but activates TRPM8 cold receptors to create perceived cooling.
Milkweed, particularly A. tuberosa, was traditionally used to reduce fever through its diaphoretic (sweat-inducing) action. It was listed in the US Pharmacopeia partly for this property. Native American infusions of roots and leaves were used for typhoid fever. No clinical evidence exists for antipyretic efficacy.
Peppermint is traditionally classified as a diaphoretic herb, used to promote sweating and facilitate fever resolution across European, Middle Eastern, and Ayurvedic traditions. Menthol also produces a topical cooling sensation. No clinical trials have specifically investigated peppermint for fever reduction.
Momordica charantia is documented across multiple traditional medicine systemsâincluding West African, Ayurvedic, and Caribbean ethnomedicineâas a febrifuge. It appears consistently in ethnopharmacological literature as a treatment for fever. No human clinical trials have validated this use.
Fever is documented as a traditional indication for M. citrifolia (noni) across Polynesian, Asian, and Caribbean traditional medicine. A 2025 Medscape review, multiple ethnopharmacological reviews, and the 2016 Pharmacognosy Journal review all include fever among noni's historically documented uses.
Morus alba leaf (Sang Ye) is a classical TCM herb for externally contracted Wind-Heat conditions presenting with fever, chills, and sore throat. It is listed in the Chinese Pharmacopoeia for this indication and has been documented in traditional use since 659 AD.
A. vulgaris has been used as an antipyretic (fever-reducing herb) in traditional European, Ayurvedic, and Asian folk medicine. Medieval European medicine specifically recommended it for fever. The entire plant is used for antipyretic purposes in Himalayan folk medicine documented in ethnobotanical literature. No clinical trials support this use.
Mulberry leaf (Sang Ye) has a long-documented traditional use in Chinese medicine for fever, particularly associated with Wind-Heat type colds or flu. It is classified as a cooling, Wind-Heat-dispersing herb and appears in classic TCM formulas for febrile conditions. No human clinical trial on fever as a primary outcome has been conducted.
Mustard's traditional use for fever is based on its diaphoretic (sweat-inducing) properties when applied as a foot bath or plaster, historically believed to 'break' a fever by promoting perspiration. This use appears in folk medicine across multiple cultures but lacks clinical evidence.
TC is documented in Iranian traditional medicine (ITM) and Indian folk medicine as a febrifuge. The ScienceDirect ITM review identifies fever as among the treatments not yet evaluated in modern phytotherapy but well-documented traditionally. Animal studies confirm antipyretic properties.
Myrrh has documented traditional use for feverish conditions, including head colds and glandular fevers, in Western herbal medicine. Myrrh tinctures were historically used internally for fevers. An antipyretic effect is listed among its reported pharmacological properties in the pharmacological literature.
Neem bark, leaves, and seeds have been used as antipyretics in Ayurvedic and Unani medicine for millennia, with the ScienceDirect overview listing antipyretic activity among reported pharmacological properties. Preclinical studies confirm antipyretic effects of neem extracts in animal models. Human clinical evidence for this specific application is absent.
Nettle has been used in traditional and historical medicine across many cultures for the management of fever, documented in ethnobotanical records and historical medical texts. The plant's anti-inflammatory phenolic compounds provide a plausible pharmacological basis. No clinical trials of nettle as an antipyretic in humans have been published.
Olive leaves have been used since antiquity as an antipyretic in traditional Mediterranean and Middle Eastern medicine. Since ancient times, olive extracts have been documented as antipyretic and anti-malarial agents. Modern clinical studies on OLE for fever specifically are lacking, so the classification remains traditional.
Fever is among the traditionally documented uses of Citrus sinensis across Chinese and other traditional medicine systems. Orange preparations, particularly the peel, were used as cooling and antipyretic agents. Clinical evidence for fever reduction by orange is not established.
Oregon grape root tea was used by indigenous North American peoples to treat fever. It is documented in American folk and herbal medicine as a febrifuge. No human clinical trials have evaluated Oregon grape or its isolated alkaloids specifically for fever management.
P. orientalis leaves are classified as antipyretic in traditional Asian medicine. Multiple traditional medicine texts and systematic reviews record its use for fever reduction. The leaves are specifically described as having antipyretic and cooling properties in TCM and Korean folk medicine.
P. foetida is known colloquially as 'Chinese fever vine' and is used in North-East India and China to treat fever and colds. Steam inhalation of the plant's leaves is used for respiratory and fever complaints. No formal preclinical or clinical antipyretic studies have been published.
The very name 'feverfew' derives from the Latin 'febrifugia' meaning fever reducer; its antipyretic use is documented from the first-century Greek physician Dioscorides and across Chinese, Greek, Indian, and Arabic traditional medicine. No clinical RCTs for fever reduction in humans have been conducted with feverfew.
Carica papaya leaf decoctions have been used extensively in folk medicine across Asia and Africa to treat fever, particularly in the context of dengue, malaria, and chikungunya. Clinical studies have demonstrated fever-associated benefit (dengue platelet recovery) but have not directly tested antipyretic outcomes as a primary endpoint. Traditional use of paw paw leaf for fever is well-documented across multiple ethnomedicinal systems.
Peach leaf is classified as febrifuge in multiple botanical and Eclectic sources, documented across traditional systems including Unani and folk herbalism. No clinical or pharmacological evidence in humans exists.
In TCM, pear's 'cooling' nature is specifically applied to reduce internal heat and alleviate fever, particularly when associated with respiratory illness. Pear prepared by steaming or boiling is traditionally used to 'clear fever and resolve phlegm' and to 'promote the secretion of body fluid.' No clinical trial data exist for pear as an antipyretic.
The entire plant of T. arvense has been documented as a febrifuge (fever-reducer) in traditional Tibetan and Chinese medicinal systems, as well as among Indigenous North American users. The seeds in particular are classified as having cooling potency in Tibetan medicine. No clinical trials have evaluated this use.
Paeonia lactiflora root has been used for over 1,200 years in China, Korea, and Japan for fever reduction. Its anti-inflammatory actionâinhibiting prostaglandin E2 synthesisâprovides a plausible mechanistic basis, but no controlled clinical trials specifically addressing fever have been conducted.
Peppermint has documented traditional use as a diaphoretic (sweat-inducing) herb and febrifuge across multiple herbal traditions. Members of the mint family have been traditionally used to bring down fever by increasing perspiration, thereby cooling the body. This use is documented in European and folk medicine traditions, including in ScienceDirect pharmacological overviews of Mentha species.
In TCM and Vietnamese traditional medicine, perilla is used as a warming diaphoretic herb to manage fever associated with chills and cold-type respiratory infections. Its use as a fever herb is described in multiple classical TCM texts. No specific human clinical trials for fever management have been identified.
P. amurense (Huang Bai) is documented in TCM for treating fever, particularly the pattern of 'bone-steaming' (hectic/consumptive fever) and general heat conditions. Korean traditional medicine also uses P. amurense to break fever. The antipyretic rationale is rooted in its 'cold' TCM nature and fire-purging properties. No dedicated human clinical trials with fever as primary endpoint have been identified.
Fever reduction is documented as a traditional use of Plantago major in multiple global ethnobotanical records. Antipyretic properties are cited in traditional Persian medicine. P. major extracts contain antipyretic compounds including aucubin and phenolic acids. No dedicated human RCT for antipyretic effect with P. major has been conducted.
Pomelo has long been used in traditional Asian medicine, Ayurveda, and Brazilian folk medicine to reduce fever. Pomelo leaf oil residues are used in Ayurveda as a fever remedy. The vitamin C content and anti-inflammatory flavonoids provide a plausible mechanistic basis, though no clinical trials specifically on pomelo's antipyretic activity exist.
Prickly ash is documented as a traditional diaphoretic and antipyretic across Native American traditions, Eclectic medicine (used during the 1849 cholera epidemic), and Ayurvedic sources. The USDA plant guide records bark infusions used by multiple tribes to treat fevers. The diaphoretic action promotes sweating to reduce body temperature. No clinical trials support this use.
Use of prickly pear for fever reduction is documented in traditional Mediterranean and Latin American medicine. Preclinical studies show analgesic and anti-inflammatory effects that are mechanistically consistent with antipyretic activity. No human antipyretic trials have been conducted.
Prunus africana bark preparations have well-documented traditional use for fever across multiple African countries, including Kenya, Ethiopia, and Cameroon. This is corroborated by multiple peer-reviewed ethnomedicinal surveys and the Medscape drug reference notes fever among its traditional uses.
The flowers of P. marsupium are traditionally used in Ayurvedic and folk medicine as an antipyretic. The gum (Kino) is also described as having antipyretic properties in classical texts.
Punarnava is traditionally listed in Ayurvedic texts and tribal medicine across Asia and Africa for fever management. The classical formulation Amritaprasha Ghrita, which includes punarnava, is indicated for fever. Its diaphoretic (sweat-inducing) and anti-inflammatory properties form the traditional mechanistic basis.
Purslane is documented as a febrifuge in folk medicine traditions across Asia, Africa, Europe, and the Americas, with decoctions of leaves used to reduce body temperature. The traditional use is attributed to its 'cooling' nature in humoral and TCM frameworks. No clinical RCTs specifically for fever reduction were found.
Queen of the meadow is one of the most historically established antipyretic herbs in European medicine, with use predating aspirin's synthesis. It is recognized in the German Commission E and EMA HMPC monographs for use in feverish colds. Its salicylate content and diaphoretic properties constitute a plausible mechanism. No human clinical trials on fever specifically exist.
Radish is listed by RxList as traditionally used for fever, reflecting documented folk medicine use particularly in Asian systems where it is considered a cooling food. TCM classifies radish as cooling in nature and uses it to counteract heat-related conditions. No clinical evidence exists for this use.
Fever is one of the oldest and most consistently documented traditional uses of red root, recorded by multiple Native American tribes and referenced in 19th-century materia medica including Clarke's Dictionary. The plant was used as a febrifuge. No modern clinical antipyretic studies have been conducted.
Raw Rehmannia (Sheng Di Huang) has been used for over 2,000 years in TCM as an antipyretic. It is classified as 'heat-clearing' and 'blood-cooling,' prescribed in febrile diseases, infections, and inflammatory heat syndromes. The Restorative Medicine monograph lists antipyretic as an established traditional indication.
Rehmannia is listed as an antipyretic in traditional Chinese medicine and appears in standard TCM monographs for fever reduction. The raw/fresh root (Sheng Di Huang) is classified as cooling and blood-heat clearing. Clinical trial data for isolated rehmannia in fever are lacking.
Rhubarb root is documented in traditional Chinese and Western herbal medicine as a fever-reducing herb. EBSCO and traditional references cite antipyretic use, but MSKCC notes there is no scientific evidence from human clinical trials to support this claim.
Multiple California indigenous tribes used Rosa californica preparations to reduce fever. The Kumeyaay prepared infusions of rose petals specifically to treat fever in infants. Related wild rose hips were also noted in historical herbal traditions as cooling agents in febrile illness.
Rose preparations have documented traditional use for reducing fever across Persian, Ayurvedic, and Arab medical traditions. Avicenna specifically documented rose for 'cooling the body during fevers.' Rosa damascena's anti-inflammatory and cooling properties form the basis of this traditional use. No clinical trials have specifically evaluated rose for fever management.
Rose hip has a long-standing traditional use as a febrifuge (fever-reducing herb) in European and German folk medicine, attributed to its mild diaphoretic (sweat-inducing) properties and high vitamin C content supporting immune defense during febrile illness. It is historically included in sweat-inducing herbal tea blends. Indigenous North American traditions also used rose hip preparations for fever management.
Safflower tea has been used in traditional medicine to induce sweating and reduce fever, documented in the Drugs.com monograph and supported by a PMC comprehensive review citing safflower's antipyretic characteristics. Persian and Chinese traditional medicine list fever management among safflower's traditional applications.
Sarsaparilla has a well-documented traditional use as a diaphoretic (sweat-inducing) and febrifuge across multiple herbal traditions. European physicians from the 16th century onward classified it as a sweat promoter for fever management. No clinical human trials have validated this use.
TCM texts spanning 2,000 years document Schizonepeta as an antipyretic herb used to lower fever in wind-cold and wind-heat conditions. Preclinical pharmacology confirms volatile-oil constituents have antipyretic properties in animal models, but human clinical trials isolating this effect are absent.
Antipyretic use of Scrophularia root is documented across both TCM and Korean traditional medicine for over two thousand years. Both S. ningpoensis and S. buergeriana are recorded as antipyretic/febrifuge agents. Preclinical studies have confirmed antipyretic effects, but formal human clinical trials are absent.
Sheep's sorrel has a well-documented traditional use as a febrifuge (fever-reducer) in European, North American indigenous, and folk herbal systems. It was historically prepared as a cooling tea from leaves and stems. No clinical studies support this use.
Shepherd's purse is documented as an antipyretic agent in multiple ethnomedicinal traditions. The PMC 2024 comprehensive review (Ćukaszyk et al., Nutrients) specifically lists it as used historically 'as a hemostatic, vaso-constrictor and antipyretic agent.' The Naturopathic Herbalist monograph lists antipyretic as a medicinal action. No clinical trials address this use.
Siler root has been used in TCM for over 2,000 years as an antipyretic herb, traditionally employed for fevers associated with wind-cold invasions. Classical formulas such as Zheng Chaihu Yin use SD as a ministerial drug for fever and headache. Modern phytochemical reviews confirm antipyretic activity is ascribed to the root's chromone and volatile oil fractions, but no controlled human clinical trials specifically evaluating fever reduction have been published.
Fever is listed among the documented traditional indications for A. julibrissin in ethnopharmacological reviews spanning Asia and Africa. Anti-fever properties are consistent with broader Albizia genus traditions. No clinical or controlled preclinical study specific to A. julibrissin antipyretic activity has been published.
S. baicalensis has a 2,000-year history of use in TCM for febrile conditions. Its bioactive compound baicalein has documented antipyretic properties. Western cultures also traditionally used S. lateriflora to lower fevers. Contemporary TCM clinical practice uses S. baicalensis in combination formulas for fever management.
Smartweed has documented traditional use as a diaphoretic (sweat-inducing) herb for fever reduction across multiple folk medicine systems. Traditional classification of the leaves as 'diaphoretic' and 'stimulant' underpins this use.
Sarsaparilla has a documented traditional use as a diaphoretic (sweat-promoting) and febrifuge across European, Asian, and Latin American herbal traditions. The species Smilax febrifuga is named for this use. No modern clinical evidence exists for this application.
A well-documented traditional use of snapdragon is the preparation of a decoction from dried leaves and flowers to lower body temperature in fever. This application appears consistently in ethnobotanical records. No clinical or pharmacological studies have evaluated the antipyretic activity of A. majus.
S. flavescens root is documented in classical TCM as an antipyretic medicine to reduce fever. This use is recorded in classical herbal texts and referenced in PubMed-indexed ethnopharmacological studies. Modern pharmacological data on antipyretic mechanisms are limited.
Soursop leaves and fruit are widely documented across tropical Africa, Asia, and South America as a traditional remedy for fever. This use is recorded in multiple ethnobotanical reviews and is among the plant's most consistent ethnomedicinal applications.
Spearmint is listed as a traditional antipyretic (fever-reducing herb) in multiple ethnobotanical sources. Mint family plants have historically been used as diaphoretics to promote sweating and break fevers. No clinical trial evidence for this indication exists.
Multiple traditional systems use sunflower as a febrifuge. In Russian folk medicine, fresh sunflower leaf poultices were applied for fevers; in Mexican curanderismo, leaf liniments with sweat-inducing wrapping were used. TCM classifies sunflower seeds as having a cooling effect that reduces fever.
Fever is among the most consistently listed traditional indications for A. calamus across Ayurveda, Unani, and Chinese medicine. The plant is used in intermittent fevers and febrile convulsions in children. Antipyretic activity is supported by preclinical data documenting anti-inflammatory and antipyretic properties.
T. chebula is documented in the Ayurvedic Pharmacopoeia of India for use in intermittent and chronic fevers. Traditional use for fever management is consistent across Ayurvedic, Unani, and folk medicine systems in South and Southeast Asia. Anti-inflammatory mechanisms provide partial mechanistic rationale.
T. kirilowii has historically been used in TCM to reduce fever, classified as a 'heat-clearing' herb that drains lung heat and generates body fluids lost during febrile illness. T. dioica leaves are used as a febrifuge (antipyretic) in Ayurvedic medicine. Both uses are documented in classical texts and ethnomedicinal surveys but lack controlled clinical evidence.
Vanilla has a well-documented traditional history as an antipyretic. The Aztec Badiano Codex (1552) recorded its use for fevers, and European pharmacopoeias through the 18th and 19th centuries described it as a treatment for febrile conditions. No modern clinical studies have validated this use.
White oak bark has been used traditionally as an antipyretic, described by herbalists as a substitute for quinine in intermittent fevers. Native American tribes used bark infusions as a fever remedy. No clinical trial data support this use.
American Indian tribes traditionally used wintergreen leaf tea for fever reduction, a use documented in ethnobotanical literature. Methyl salicylate's structural similarity to aspirin gives it theoretical antipyretic potential, but no clinical trials have evaluated wintergreen or its extracts for fever in humans.
Antipyretic use of X. strumarium root decoction for high fevers is documented in multiple ethnomedicinal reviews including ResearchGate pharmacognosy reviews. The plant is listed with antipyretic properties in traditional practice across Africa and South Asia. No human or animal fever-model studies have been identified.
Yellow Root has been used in Cherokee and Appalachian traditional medicine as an antipyretic â taken as a tea to reduce fever. This use is documented ethnobotanically. No clinical trials on Yellow Root or its constituent berberine as an antipyretic in humans have been identified.
Multiple Zanthoxylum species have documented traditional uses as antipyretics across Africa, South Asia, and Latin America. Z. armatum is listed ethnobotanically for fever treatment in the Himalayas and South Asia, and Z. caribaeum is traditionally used for fever in the Caribbean. No controlled human clinical trials have been conducted.
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