Heather

Other Names

Al-khulanjautumn heatherbasambassumbeesomBesenheidebesomBrecinaBrezoBrugoBruyère calluneCalluna alpestris Gand.Calluna atlantica SeemenCalluna beleziae RouyCalluna beleziana RouyCalluna brumalis Gand.Calluna erica DC.Calluna erica proles beleziae (Rouy)Calluna erica proles olbiensis (Albert) RouyCalluna erica var. condensata (Lamotte) RouyCalluna erica var. hirsuta (Gray) RouyCalluna olbiensis AlbertCalluna oviformis Gand.Calluna pyrenaica Gand.Calluna sagittifolia GrayCalluna sagittifolia var. hirsuta GrayCalluna sancta Gand.Calluna vulgarisCalluna vulgaris (L.) HullCalluna vulgaris var. hirsuta f. typica BeijerinckCalluna vulgaris var. incana Reichb.Calluna vulgaris var. pubescens W.D.J.KochCalluna vulgaris var. tomentosa G. DonCallunae floscommon heatherErica sagittifolia StokesErica sagittifolia var. villosa StokesErica vulgarisErica vulgaris L.Erica vulgaris var. alba WestonEricoides vulgaris (L.)Fraochgrugheather flowerHeidekrautHerba EricaeKanarbikKanervalingLjungQueiroaRösslyngScotch heatherScots heatherScottish heatherStruikheisummer heatherSüpürge otuUrzeVereskwhite heather

Synopsis

Heather (Calluna vulgaris): A Comprehensive Reference

1. Identity and Botanical Description

Taxonomy and Nomenclature

Calluna vulgaris L. (heather) is an evergreen perennial shrub and the only member of the genus Calluna Salisb., belonging to the family Ericaceae Juss. It is known also as Common Heather, Ling plant, Heather, or Scotch Heather. The genus name Calluna is derived from the Greek word kallunein, meaning "to cleanse," which is related to the traditional use of heather for making brooms.

Geographic Distribution and Ecology

The growth area currently includes northern and western Europe, some parts of Western Siberia, Turkey, Iceland, New Zealand, Morocco, the Azores, North America, Australia, the Mediterranean, and is sometimes found in Asia Minor. Calluna vulgaris, as an oligotrophic plant, grows in soils poor in minerals, and is representative of the manganophilic plants. Heather is extremely cold-hardy, surviving severe exposure and freezing conditions well below −20 °C. C. vulgaris grows on poor sandy acidic soils (pH = 3.5–6.7), which is due to the fact that it forms a symbiosis with underground fungi in the form of mycorrhiza.

Botanical Morphology

Calluna vulgaris (common heather) can grow up to 1 m in height; it has small flowers that are pink or purple with 4 welded petals arranged in terminal clusters, and very small leaves that are opposite and applied in 4 rows along reddish and tortuous stems. The plant grows in various altitudes and tends to form genetically unique ecotypes.

Plant Parts Used and Common Preparations

The medicinal parts are the flowering stalk and leaves. The flowering stems are harvested in the autumn and dried for later use. Common preparations documented in the literature include:

Herbal tea / infusion: An aqueous preparation of the dried flowering shoots or herb, the most traditional form.
Decoction: A more concentrated aqueous extraction, used particularly for urinary and rheumatic conditions.
Hydroethanolic dry extracts (DECV): Extracts are loose powders colored from light brown to dark brown, with a bitter taste and a specific odor; the yield of DECV from plant material was 10.42 ± 0.2% (purified water) and 16.79 ± 0.3% (70% ethanol) as extractants.
Liniment / poultice: The plant is often macerated and made into a liniment for treating rheumatism and arthritis, whilst a hot poultice is a traditional remedy for chilblains.
Tincture: Alcoholic extracts of the leaves and flowering shoots.
Heather honey: Heather honey, derived from Calluna vulgaris, has a thick, jelly-like consistency and varies in color from dark amber to reddish-orange; it is commonly produced in mountainous regions of Spain, Britain, and northern Europe, thriving at elevations up to 2,600 meters.
Topical / cosmetic extracts: Calluna vulgaris extract, used in cosmetics, is an extract of the flowering shoots of heather.
Homeopathic preparations: The plant is used in Bach flower remedies, with the keywords for prescribing it being "Self-centredness" and "Self-concern."

C. vulgaris is a pharmacopoeial plant in Germany and France, but not in the European Union more broadly.

2. Traditional and Historical Use

Celtic, Scottish, and Northern European Traditions

The delicate purple flowers that blanket Scottish moorlands have been used medicinally since ancient times; known in Gaelic as "fraoch," heather was considered a plant of good fortune and protection, but its applications extended well beyond folklore into practical healing. Traditional uses included preparing infusions to address urinary and digestive issues, creating poultices for skin conditions and wound healing, brewing tea to reduce inflammation and support immune function, and incorporating into baths for skin soothing and relaxation.

Medieval Europe

In the Middle Ages, heather had various uses; it was primarily used for medicinal purposes, treating ailments such as coughs, consumption, arthritis, and rheumatism. Heather was also utilized for its soporific aroma in mattresses. Heather was used for medicinal purposes in medieval times; herbalists and monks used it to treat a variety of ailments, showcasing the importance of natural remedies in healthcare during that period.

Swedish and Broader European Herbal Medicine

Heather flowers are a traditional remedy in Swedish herbal medicine to treat inflammatory diseases and wounds. According to European folk medicine, heather herb and flowers were traditionally used as a tea for purifying the blood, stimulating metabolism, treating gastrointestinal disorders, and reducing inflammation and gravel of the urinary system. Heather flower tea was also used as a folk remedy for alleviating bone and joint inflammation, for normalizing low blood pressure, and for treating other vascular disorders.

Turkish Ethnopharmacology

The infusion of aerial parts of C. vulgaris is traditionally used in Turkey as a urinary tract disinfectant and diuretic; the plant material is a part of traditional folk medicine for treating urinary tract disturbances and inflammatory-related disorders.

Brewing Traditions

Heather was used in gruits and ales during medieval times; it has been widely utilized in brewing practices for several centuries and is often associated with Celtic drinking traditions. Mixed with malt in the Middle Ages, heather flowers were once an important ingredient in gruit, which was a flavouring used in heather beer making before the use of hops found favour.

Summary of Traditional Indications

Across traditions, heather has been used in traditional medicine to treat rheumatism, arthritis, eye diseases, kidney stones, inflammation of the bladder and kidneys, bronchitis, diarrhea, eczema, high blood pressure, increased irritability, anxiety, and sleep disorders. Heather has long been used as a medicinal herb active against rheumatism and arthritis, as well as an antiseptic, choleretic, vulnerary, and expectorant; moreover, its decoction is applicable for treating diseases of the urinary tract, which is indicative of its anti-inflammatory, diuretic, and antimicrobial properties.

3. Key Constituents and Active Compounds

Phenolic Compounds — Overview

Phenolic acids (hydroxycinnamic acid, caffeic acid, coumarins), flavonoids (rutin, quercetin, isoquercetin, kaempferol, luteolin, apigenin), phenols and their glycosides (hydroquinone, arbutin, methylarbutin), tannins, triterpenes, anthocyanidins, terpenoids (lupeol, ursolic and oleanolic acids), organic acids, steroids, and essential oils and their subclasses are the most distinct compounds reported in C. vulgaris composition.

Hydroquinone Glycosides: Arbutin and Methylarbutin

The phenolic compounds found in heather include monomeric phenols (hydroquinone and arbutin) of up to 1.5%; phenolcarboxylic, hydroxycinnamic, and hydroxybenzoic acids; coumarins; and tocopherol (vitamin E). The hydroquinone glycosides arbutin and methylarbutin were identified and quantified by HPLC, with arbutin being the dominant substance in this group of biologically active substances. Arbutin is hydrolysed by intestinal bacteria with release of hydroquinone, a reactive molecule known for its capacity to limit recurrent urinary infections (cystitis) and for its depigmenting power through blocking the synthesis of melanin.

Flavonoids

Arbutin was dominant among the hydroquinone derivatives; chlorogenic acid was dominant among the hydroxycinnamic acids; rutin, hyperoside, and quercetin-3-D-glucoside were dominant among the flavonoids; and (+)-gallocatechin and (−)-epigallocatechin were dominant among the tannin metabolites. Qualitative and quantitative analysis by LC-MS and NMR indicated high levels of quercetin, kaempferol, and myricetin derivatives as well as procyanidins.

Triterpenes

Chlorogenic acid and hyperoside were found to be predominant among the phenolic compounds, while ursolic acid, oleanolic acid, and uvaol prevailed among the triterpenic compounds. Triterpenoid substances correspond to 20–60% of the weight of the flowers or waxes that cover the leaves; in particular, ursolic acid is considered protective of tissues, immunomodulatory (antiviral, antibacterial, anti-cancer protection), and anti-inflammatory.

Fatty Acids, Nutritional Components

A high content of fiber and carbohydrates (75%) and the prevalence of α-tocopherol as a vitamer have been noted; linolenic (35%), linoleic (27%), and palmitic (21%) acids were the most abundant fatty acids identified in C. vulgaris flowers.

Extraction Solvent and Compound Yield

The content of flavonoids and polyphenols was twice as high in the hydroethanolic DECV (2.33% and 11.08%, respectively) than in the water DECV (0.89% and 5.95%, respectively). It has been shown that the most promising substance for creating new medicines from C. vulgaris is the extract obtained with a 70% ethanol solution.

Seasonal and Geographic Variation

The highest total amount of phenolic compounds, tannins, flavonoids, hydroxycinnamic acids, and proanthocyanidins was detected in leaves and roots at all growth stages except the flowering stage; at the flowering stage, the highest content of some groups of phenolic compounds (flavonoids, proanthocyanidins, and anthocyanins) was observed in flowers. A significant diversification of phenolic and triterpenic compounds and antioxidant activity was determined in heather samples collected in distinct habitats; natural habitats, due to their characteristic chemical heterogeneity, lead to diversity in the quality indicators of plant raw materials.

4. Mechanisms of Action

Antimicrobial / Urinary Antiseptic Mechanism

The urinary antiseptic effect of heather is principally attributed to arbutin. Arbutin is hydrolysed by intestinal bacteria with release of hydroquinone; this reactive molecule is known for its capacity to limit recurrent urinary infections (cystitis). The high total phenolic content also contributes: polyphenols are largely responsible for the antimicrobial activity of plant extracts, and alcohol (methanol) was shown to be a better solvent for extraction of phenolic compounds with pronounced antimicrobial activity than water.

Anti-inflammatory Mechanisms

A new property of ursolic acid — lipoxygenase and cyclooxygenase inhibition — was described in an acetone extract of heather flowers, which could help explain the anti-inflammatory characteristics of this plant; in mouse peritoneal macrophages, human platelets, and differentiated HL60 leukemic cells, ursolic acid at 1 µM blocks arachidonate metabolism. Additionally, C. vulgaris demonstrated hepatoprotective effects by upregulating antioxidant enzymes and reducing hepatic inflammation markers such as COX-2 and TNF-α.

MAO-A Inhibition (Sedative / Antidepressant Mechanism)

Heather is used as a preventive and therapeutic agent in increased irritability, anxiety, sleep disturbances, and decreased performance, all of which may be owing to its inhibitory effects on monoamine oxidase-A (MAO-A). Quercetin, the primary flavonoid of the plant, has been shown to block monoamine oxidase, resulting in sedative effects.

Antioxidant Activity

The photoprotective effects of heather have been attributed to its capacity to suppress the production of reactive oxygen species because of its compounds, namely hyperoside, quercitrin, quercetin, and kaempferol. Several studies underlined that the phenolic compounds are the main direct links to the antioxidant capacity of C. vulgaris.

Hepatoprotective and Antidiabetic Mechanisms

Calluna extract, which is rich in catechin, gallic acid, and sinapic acid, prevents the development of insulin resistance and, as a result, functions as a hypoglycemic, hypolipidemic, hepatoprotective, and antioxidant agent. Calluna extract also acts as an antioxidant and antidiabetic; it normalized the neurotransmitter-catabolizing enzyme AChE and MAO in both liver and brain tissue, indicating its anti-neurodegenerative properties.

Antiviral Mechanism

Other pharmacological effects of C. vulgaris include antiviral properties indicated by the presence of oleanolic and ursolic acid, which showed a high Hepatitis C virus inhibition in the ethyl acetate fractions.

Antiproliferative Activity

Ursolic acid isolated from heather flowers also showed antiproliferative activity: this compound has an increased role in inhibiting the lipoxygenase activity and thus the proliferation of HL60 leukemic cells in a dose-dependent manner.

5. Scientific Evidence by Area of Use

5.1 Urinary Tract Infections and Antimicrobial Activity

Evidence type: Predominantly in vitro (laboratory); no published randomized controlled human trials on heather alone for urinary tract infections were identified.

Calluna vulgaris L. Hull has been used for treatment of urinary tract infections in traditional medicine; one study analyzed in vitro antibacterial activity of plant extracts on different strains of Escherichia coli, Enterococcus faecalis, and Proteus vulgaris, as well as the concentrations of total phenols and flavonoids in the extracts, using minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) determinations.

The concentrations of total phenols ranged between 67.55 to 142.46 mg GAE/g; the concentrations of flavonoids in extracts ranged from 42.11 to 63.68 mg RUE/g; the aqueous extract of C. vulgaris showed a significant antibacterial activity, with MIC values in the range from 2.5 mg/mL to 20 mg/mL.

The strongest antibacterial activity was detected on Proteus vulgaris while the activities on E. coli and E. faecalis strains were similar; the aqueous extract showed the strongest effect against all tested bacterial strains; in general, tested extracts demonstrated selective antibacterial activity, the activity depending on both the species of bacteria and the type of extract.

The antibacterial properties of C. vulgaris were investigated against urinary tract pathogens where strains of Escherichia coli, Enterococcus faecalis, and Proteus vulgaris were found to be sensitive to the plant extracts; Mandim et al. (2018, 2019) highlighted the capacity of C. vulgaris inflorescence extracts (acetone, methanol, decoction, and infusion) to inhibit twelve pathogenic bacterial strains thought to be responsible for urinary tract infections.

Strength of evidence: These results are entirely in vitro. The transition from in vitro antibacterial MIC data to clinical efficacy in humans has not been validated for heather in registered clinical trials. The evidence supports a biologically plausible rationale for traditional use, but no human clinical trials confirm efficacy or effective dosing in vivo.

5.2 Anti-inflammatory Effects

Evidence type: In vitro and animal models; no clinical trials in humans identified.

A dry extract of C. vulgaris (DECV) demonstrated an anti-exudative effect within the first hour after the start of treatment, reaching its maximum values at the third and fifth hour depending on the solvent of the extract; the hydroethanolic DECV showed the highest anti-inflammatory activity among all tested extracts. Bioassay-guided studies identified kaempferol-3-O-β-D-galactoside as an active constituent with anti-inflammatory and antinociceptive activity from the aerial parts of Calluna vulgaris (Orhan et al., 2007, cited in J. Ethnopharmacol. 2007;114:32–37).

Strength of evidence: Preliminary — preclinical only. No human clinical trials are available.

5.3 Anxiolytic, Sedative, and Mood-Related Effects

Evidence type: In vitro (MAO-A inhibition); animal behavioural studies; one negative EFSA regulatory opinion.

Pharmacological studies showed antiseptic, antioxidant, and MAO-A inhibitory effects of C. vulgaris plant extracts (Hooper & Cassidy, 2006; Deliorman-Orhan et al., 2009; Saaby et al., 2009). A 2009 study (Saaby, Rasmussen, & Jäger, cited in J. Ethnopharmacol. 2009;121:178–181) specifically attributed MAO-A inhibition to quercetin isolated from heather.

Crucially, however, in 2009 the European Food Safety Authority (EFSA) released a scientific opinion sustaining the absence of a relation between C. vulgaris and the normal mood balance or normal ability to fall asleep (EFSA, 2010). This finding means that at the time of its evaluation, EFSA did not consider the evidence sufficient to substantiate health claims for heather in these areas.

Strength of evidence: Weak for human application. In vitro and animal data support a mechanistic basis, but EFSA explicitly rejected health claims for mood and sleep, and no human clinical trials have been published.

5.4 Photoprotection and Skin Health

Evidence type: In vitro (cell line) and animal (SKH-1 hairless mice) studies.

One study investigated the protective effect of a Calluna vulgaris extract in human keratinocytes (HaCaT cells) exposed to ultraviolet B (UVB) radiation; HaCaT cells were treated with C. vulgaris extract 30 minutes prior to UVB irradiation; the protective effect was evaluated by cell viability (MTT assay), lipid peroxide generation (MDA assay), and DNA damage (comet assay and ELISA quantification of cyclobutane-pyrimidine dimers [CPDs] and 6-4 photoproducts [6-4PPs]).

One animal study investigated the activity of C. vulgaris delivered via a hydrogel on three main pathways (oxidative stress, inflammation, and DNA damage) on skin exposed to multiple doses of UVB in SKH-1 mice; 50 female mice were divided randomly into 5 groups, and the extract was applied topically in a dose of 4 mg polyphenols/cm² 30 minutes before each UVB exposure (240 mJ/cm²) over 10 consecutive days.

UVB increased cytokine levels, formation of CPDs and sunburn cells, and epidermal thickness (all P < 0.001) compared with the control group; topical application of C. vulgaris protected the skin against inflammation and DNA damage, as shown by a decreased number of CPDs and sunburn cells (P < 0.001); the authors suggested administration via hydrogel may be a viable method for chemoprevention.

Strength of evidence: Preliminary — in vitro cell-line work and one animal study. No human clinical trials on skin photoprotection with heather have been published.

5.5 Hepatoprotective Effects

Evidence type: Animal study (rat model).

Calluna vulgaris (CV), known for its anti-inflammatory and antidepressant properties, was assessed as a candidate for treating steatosis and brain lesions; fatty liver was induced in rats by CCl4 oral administration (50 µL/kg in olive oil three times/week) for six weeks. Calluna extract was shown to act as an antioxidant and antidiabetic agent; it normalized the neurotransmitter-catabolizing enzymes AChE and MAO in both liver and brain tissue, indicating its anti-neurodegenerative properties.

Strength of evidence: Preliminary — one animal study only. No human clinical trials have been identified.

5.6 Antiviral Activity (Hepatitis C Virus)

Evidence type: In vitro.

Antiviral properties of C. vulgaris have been indicated by the presence of oleanolic and ursolic acid, which showed a high Hepatitis C virus inhibition in ethyl acetate fractions. (García-Risco MR et al., Virus Res. 2015;198:9–14, as cited in supercritical fluid extraction of heather and evaluation of anti-hepatitis C virus activity of the extracts, Virus Res 2015;198:9–14.)

Strength of evidence: Very preliminary — in vitro only.

5.7 Antioxidant Activity

Evidence type: In vitro assays (DPPH, FRAP, ABTS).

Phytochemical analysis of heather samples was carried out using spectrophotometric methods and HPLC-PDA techniques, while antioxidant activity was determined using ABTS and FRAP assays. Qualitative and quantitative analysis by LC-MS and NMR indicated high levels of quercetin, kaempferol, and myricetin derivatives as well as procyanidins; the hydroalcoholic extract displayed the highest antioxidant activity and total phenolics (TPC) and flavonoid contents (TFC). Multiple independent laboratory studies consistently confirm substantial in vitro free-radical scavenging activity.

Strength of evidence: Consistent in vitro data; clinical significance in humans is unestablished.

5.8 Heather Honey and Apitherapy

Heather honey is particularly rich in antioxidants, vitamins, and minerals, offering several health benefits including antibacterial and anti-inflammatory properties. Although apitherapy is not yet recognized as complementary medicine, it represents a promising therapy; findings revealed that heather honey exhibits similar properties to Manuka honey, and therefore can represent a valuable natural remedy that can be utilized for healing purposes.

Strength of evidence: Mostly in vitro; similarities to Manuka honey are based on laboratory comparisons, not clinical trials.

6. Body Systems and Health Areas Associated with Heather

Based on available traditional records and scientific investigations, the following body systems and health areas are associated with Calluna vulgaris:

Urinary system: Its decoction is applicable for treating diseases of the urinary tract, indicative of its anti-inflammatory, diuretic, and antimicrobial properties.
Musculoskeletal system: Heather has long been used as a medicinal herb active against rheumatism and arthritis.
Nervous system / CNS: It is used as a preventive and therapeutic agent in increased irritability, anxiety, sleep disturbances, and decreased performance, possibly owing to its inhibitory effects on MAO-A.
Respiratory system: An infusion of the flowering shoots is used in the treatment of coughs, colds, bladder and kidney disorders, and cystitis.
Skin and integumentary system: Pharmacological effects reported include anti-inflammatory, antiseptic, sedative, diuretic, antiviral, cytotoxic, antiproliferative, antibacterial, cardioprotective, hepatoprotective, and antioxidant effects.
Hepatic system: C. vulgaris demonstrated hepatoprotective effects by upregulating antioxidant enzymes and reducing hepatic inflammation markers such as COX-2 and TNF-α.
Gastrointestinal system: Tea made from the flowers is used as an herbal remedy for diarrhea, stomach pain, and colic.
Cardiovascular system: Triterpenoids present in heather have reported antioxidant, cardioprotective, anti-inflammatory, hepatoprotective, antidiabetic, anticancer, and antiviral effects.

7. Dosage Forms and Dosages Reported in Sources

There are no standardized, large-scale human clinical trial dosages for heather in published literature. The following dosage information is drawn from research studies and phytotherapy references:

Topical extract (animal study, UVB photoprotection): The extract was applied topically on skin in a dose of 4 mg polyphenols/cm² 30 minutes before each UVB (240 mJ/cm²) exposure over 10 consecutive days.
Oral extract (acute toxicity, animal study): Oral administration of the extracts at a dose of 6,000 mg/kg did not cause death; the overall condition of the animals in the experimental groups was satisfactory, with no visual changes compared with the control group.
In vitro antibacterial assay concentrations: The aqueous extract of C. vulgaris showed significant antibacterial activity, with MIC values in the range from 2.5 mg/mL to 20 mg/mL.
Animal hepatoprotective study: Fatty liver was induced in rats by CCl4 oral administration (50 µL/kg in olive oil three times/week) for six weeks, with heather extract used as intervention.
Traditional tea dosage (not from clinical trials): Heather is traditionally prepared as an infusion of the dried flowering shoots; standardized human dosing from clinical trials has not been established for any indication.

Note: The German Commission E and ESCOP have addressed dosage frameworks for many European medicinal plants. C. vulgaris is a pharmacopoeial plant in Germany and France; however, specific Commission E monograph dosage figures for heather were not retrievable from publicly accessible sources consulted for this article.

8. Safety Considerations and Interactions

General Toxicological Profile

Oral administration of dry C. vulgaris extracts at a dose of 6,000 mg/kg in animal models did not cause death; the overall condition of the animals was satisfactory, with no visual changes compared with the control group, suggesting a wide acute safety margin in rodent models. However, these animal findings cannot be directly extrapolated to human safety at therapeutic doses.

Arbutin and Hydroquinone Release: A Documented Concern

Heather contains arbutin, whose hydrolysis releases hydroquinone. The European Commission's Scientific Committee on Consumer Products (SCCP) concluded that, although the general toxicological assessment of β-arbutin suggests the substance may be safe, the bioavailability of hydroquinone under conditions of intended use is of concern. Hydroquinone was banned as a skin whitener; as the SCCP stated concerns with substances resulting in the release and/or formation of hydroquinone, a safety assessment of Alpha-Arbutin was considered necessary. This concern pertains primarily to cosmetic and concentrated topical applications, but the systemic hydrolysis of arbutin following ingestion is also a consideration with high-dose supplementation, particularly in individuals with compromised renal function.

EFSA Rejection of Mood and Sleep Health Claims

In 2009, EFSA released a scientific opinion sustaining the absence of a relation between C. vulgaris and normal mood balance or normal ability to fall asleep (EFSA Journal 7(9): 1283). This regulatory finding is significant: it means that health claims connecting heather to mood or sleep support were not substantiated by the available body of evidence reviewed by the European food safety authority.

MAO-A Inhibition: Potential Interaction Consideration

The sedative and anxiolytic properties of heather may be owing to its inhibitory effects on monoamine oxidase-A (MAO-A). MAO-A inhibition is a mechanism shared with certain pharmaceutical antidepressants (MAOIs); in principle, concurrent use of heather preparations with serotonergic agents, sympathomimetics, or foods rich in tyramine could be a theoretical interaction concern. However, this has not been investigated in clinical pharmacokinetic or pharmacodynamic studies in humans.

Tannin Content

The highest total amount of tannins was detected in leaves and roots at most growth stages. High tannin intake from any botanical source can, in excessive quantities, reduce iron absorption and, with long-term very high-dose consumption, contribute to gastrointestinal irritation. No specific clinical adverse event reports for heather have been identified in the literature reviewed.

Absence of Human Clinical Safety Data

Despite recent scientific focus on the chemical constituents and biological properties of C. vulgaris, there has not been any systematic review to point out all of the available constituents and the beneficial health properties of this plant, or of its related honey. The absence of published clinical trials means that formal characterization of adverse effects, drug interactions, contraindications in pregnancy, or effects in special populations is largely unavailable.

Regulatory Status

C. vulgaris is a pharmacopoeial plant in Germany and France, but not in the European Union as a whole. It is not included in regulatory approved lists of medicinal herbs for specific indications within the European Medicines Agency's HMPC monograph programme, consistent with the overall limited clinical evidence base.

References

Health Conditions

Health conditions that Heather may help support.

No conditions available.

Body Systems

Body systems that Heather may help support.

No body systems available.