Himalaya berry

Other Names

Armenian blackberryEuropean blackberryHimalayan berryHimalayan blackberryRubus armeniacusRubus bifronsRubus discolorRubus linkianusRubus proceruswild blackberry

Synopsis

Himalaya Berry (Hippophae rhamnoides L.): An Encyclopedic Reference

1. Identity: Botanical Name, Source, and Common Forms

1.1 Nomenclature and Taxonomy

The dietary supplement and natural ingredient commercially marketed as "Himalaya berry" is most rigorously identified with Hippophae rhamnoides L., commonly called sea buckthorn. "Himalaya berry" and "Himalayan giant blackberry" are recognised common names applied to this plant in horticultural and trade contexts. Sea buckthorn is a deciduous shrub or tree of the genus Hippophae in the family Elaeagnaceae. The genus name Hippophae comes from Ancient Greek híppos meaning "horse" and pháos meaning "light," due to the ancient Greeks' use of sea buckthorn leaves as horse fodder to make their coats shine more. The specific epithet rhamnoides derives from Rhamnus plus -oides, meaning "resembling," referring to superficial similarity to the buckthorn genus Rhamnus.

Sea buckthorn — also named sea berry, Hippophae rhamnoides L., or Elaeagnus rhamnoides L. — has been used in daily life for centuries for purposes ranging from a beverage with a pleasant taste and flavour to an agent for the treatment of many disorders and diseases. The species Hippophae rhamnoides is highly variable, with eight recognized subspecies. Taxonomists still disagree on the precise classification of the genus; Chinese scientist Hu has updated the classification system and revised Hippophae L. into 6 species and 17 subspecies.

Note on naming overlap: The term "Himalaya berry" also appears occasionally in reference to the Himalayan blackberry (Rubus armeniacus, synonym Rubus discolor/Rubus procerus), which is native to Iran and the Transcaucasus region, and to the yellow Himalayan raspberry (Rubus ellipticus Sm.). Rubus ellipticus Sm. (Rosaceae) is a native species of the Indian subcontinent, Southern China, and the Philippines, which has been historically used as a traditional medicine and food. In the context of dietary supplements and nutraceuticals — the primary focus of this article — the term "Himalaya berry" is most consistently associated with Hippophae rhamnoides and its Himalayan-origin subspecies, which is the subject of the body of peer-reviewed pharmacological and clinical literature.

1.2 Geographic Distribution and Himalayan Significance

H. rhamnoides is native to cold-temperate regions of Europe and Asia, between 27° and 69°N latitude and 7°W and 122°E longitude. In Asia, H. rhamnoides can be found in the northern regions of China, throughout most of the Himalayan region, including India, Nepal and Bhutan, Pakistan and Afghanistan. Sea buckthorn varieties are native in the Himalayan regions of India, Nepal, Bhutan, Pakistan and Afghanistan, China, Mongolia, Russia and Kazakhstan.

In India, sea buckthorn grows naturally in the cold-arid regions of Ladakh, Himachal Pradesh, Uttarakhand, and parts of Arunachal Pradesh. Known locally by names such as Chharma (Ladakhi) and Dhar-Bu, the plant is central to traditional healthcare among local ethnic communities such as the Ladakhis, Brokpas, and Monpas. From a broader perspective, the origin of sea buckthorn is thought to be between the Eastern Himalaya and the Hengduan Mountains.

1.3 Plant Description

Hippophae rhamnoides L. is a perennial deciduous shrub of the family Elaeagnaceae and has been widely used for its therapeutic potential in addressing various health complications. It is a pioneer tree species for soil improvement, wind and sand control, and soil and water conservation. The berries are characteristically bright orange-yellow, small, and highly juicy. Morphologically, sea buckthorn berries consist of seeds (about 23%), pulp (about 68%), and peel (about 8%).

1.4 Common Forms and Preparations

All major parts of the plant — berries, seeds, leaves, bark, roots, and thorns — are used commercially and medicinally. The entire plant (branches, roots, and thorns) has been traditionally used in medicine, as a nutritional supplement, for soil and moisture conservation, and for the establishment of wildlife habitats.

The principal commercial forms derived from the berry are two distinct oils with markedly different compositions:

Pulp (berry) oil: Pressed from the soft orange flesh and skin; it is especially rich in carotenoids including beta-carotene and lycopene, which give the oil its deep orange colour, as well as high levels of palmitoleic acid (omega-7).
Seed oil: The seed oil is rich in essential fatty acids, linoleic (18:2ω-6) and α-linolenic (18:3ω-3) acids. Alpha-tocopherol is the major vitamin E compound in sea buckthorn, accounting for 70–80% of total tocopherols and tocotrienols. Seed oil also contains considerable amounts of gamma-tocopherol. The total amount of tocopherols and tocotrienols in seed oil is roughly 100–300 mg/100 g and in pulp oil 100–200 mg/100 g of oil.

Oils extracted from the pulp or seed have traditionally been used for treating mucosal disorders such as dermatitis. In addition, dried or fresh leaves are prepared for nutritious herbal tea as they are rich in nutraceutical components. Modern commercial preparations include juices, encapsulated oils (softgels), freeze-dried berry powders, topical creams and ointments, standardized extracts (particularly flavonoid-enriched extracts), teas, and fermented products. Sea buckthorn berries are included in the Chinese Pharmacopoeia.

2. Traditional and Historical Use

2.1 Tibetan Medicine

Traditional use in Tibet goes back to the eighth century. Sea buckthorn's foundational role in traditional medical systems within its native range includes Tibetan, Mongolian, and Chinese medicine, as well as broader Eurasian ethnobotanical applications. These traditions are codified in documents including the Tibetan rGyud-bzhi (Four Medical Tantras) and the Mongolian Mongγol udq-a üsüg-ün čindamani erike (White Crystal Beads of Pharmaceutical Identification), as well as Li Shizhen's Bencao Gangmu (Compendium of Materia Medica).

Its traditional therapeutic applications primarily address bronchopulmonary ailments, functional gastrointestinal disorders, thermal injuries, and various hematological abnormalities. Sea buckthorn (Hippophae Fructus), as a homologous species of medicine and food, is widely used by Mongolians and Tibetans for its anti-tumor, antioxidant and liver-protecting properties.

2.2 Chinese Medicine

Sea buckthorn has been used for centuries in Chinese medicine to treat chronic infections like colds, coughs, and to detoxify the lungs and body. In Sino-Mongolian medical traditions, H. rhamnoides is primarily employed to regulate the splenic-gastric axis, suppress cough, and improve hemorheology. Sea buckthorn is also a traditional medicine with thousands of years of application history, which can treat heart disease, lung disease, and other diseases.

2.3 Indian and Himalayan Traditions (Ayurveda and Local Ethnomedicine)

Traditionally utilized in Tibetan and Ayurvedic medicine, it contains a rich array of bioactive compounds, including flavonoids, carotenoids, sterols, vitamins, and essential fatty acids. The plant was traditionally employed for treating ailments of the skin, liver, heart, digestive system, and immune system, and was revered for its rejuvenating properties. Seed oil, when mixed with butter or ghee, is used as a digestive tonic and skin emollient in Himalayan communities.

Sea buckthorn-based preparations have been extensively exploited in folkloric treatment of slow digestion, stomach malfunctioning, cardiovascular problems, liver injury, tendon and ligament injuries, skin diseases, and ulcers.

2.4 Russian and Central Asian Use

Sea buckthorn has also been used medicinally in Russia, China, India, and Tibet for centuries. It has been used as a medicinal plant in Tibetan and Mongolian traditional medicines, and has multifarious medical properties, including anti-fatigue as well as immunoregulatory effects. Soviet military and space programs reportedly used sea buckthorn preparations; Russian cosmonauts utilized sea buckthorn in the diet and applied sea buckthorn cream to protect against harmful radiation.

2.5 Greco-Roman Antiquity

The genus name Hippophae reflects the ancient Greeks' use of sea buckthorn leaves as horse fodder to make their coats shine more. Sea buckthorn can be found as Ippophaes in Dioscorides' De Materia Medica, where the liquor from the root is described as purging choleric or watery matter and phlegm downwards, and a "dragm" is recommended for purgations.

3. Key Constituents and Active Compounds

Sea buckthorn contains nearly 200 nutrients and bioactive components. A unique mixture of bioactive components has been elucidated, including flavonoids, phenolic acids, proanthocyanidins, carotenoids, fatty acids, triterpenoids, vitamins, and phytosterols, which imply the great medicinal worth of this plant. The years 2010–2021 brought significant progress in phytochemical research on sea buckthorn; several tens of new natural products were isolated from fruit, seeds, and leaves, mainly flavonoids, flavonolignans, and triterpenoid saponins. Apart from these, different parts of sea buckthorn were shown to contain ellagitannins, phenolic acids, lignans, naphthols, naphthoquinones, anthraquinonoids, triterpenoids, phytosterols, carotenoids, volatile compounds, norsesquiterpenoids, and alkaloids.

3.1 Vitamins

Research on H. rhamnoides has demonstrated the presence of vitamins A, E, K, riboflavin, and folic acid, among others. The oil contains approximately 14 vitamins: A, C, D, E, F, K, P, and B-complex vitamins (B1, B2, B6), as well as provitamin A in the form of alpha- and beta-carotene. Vitamin C is particularly notable: sea buckthorn growing in Europe in coastal dunes contains 120–315 mg% of vitamin C in fresh fruit, and the species growing in the Alps contains much more — 405–1100 mg%.

3.2 Carotenoids

Carotenoids in sea buckthorn include lycopene, lutein, zeaxanthin, α-carotene, β-carotene, and γ-carotene. Sea buckthorn stands among the richest sources of zeaxanthin, ranging between 19.3–42.4 mg/100 g DW, mostly in the esterified form. With a content of 10–20 mg/100 g DW, sea buckthorn is considered a "very high (>2 mg/100 g)" source of β-carotene. Carotenoids and polyphenolic compounds, especially phenolic acids and flavonoids, are the main bioactive and antioxidant components.

3.3 Fatty Acids — Pulp Oil vs. Seed Oil

The fatty acid profiles of pulp oil and seed oil differ substantially. GC-MS profiling of fatty acids in seeds and pulp of berries indicated that the seed oil contained linoleic and α-linolenic acids at 33–36% and 30–36%, respectively, while the pulp oil contained palmitoleic acid at 32–42%.

Palmitoleic acid (omega-7, 16:1n-7): Sea buckthorn fruit oil contains the rare palmitoleic acid (omega-7), which is a component of skin lipids and stimulates regenerative processes in the epidermis and wound healing. Sea buckthorn oil contains, on average, 35% palmitoleic acid (16:1n-7), a rare and valuable acid and a component of skin fat, known for its ability to support cell tissue and speed wound healing, as well as for hypocholesterolemic and hypoglyceridemic actions.
Essential fatty acids in seed oil: Linoleic (18:2n-6) and alpha-linolenic acids (18:3n-3) comprise about 70% of seed oil fatty acids.
Full fatty acid spectrum: Sea buckthorn oil contains approximately 190 bioactive substances including saturated fatty acids — palmitic acid (C16:0), stearic acid (C18:0) — and unsaturated fatty acids including oleic acid (ω-9, C18:1), palmitoleic acid (ω-7, C16:1), linoleic acid (ω-6, C18:2), alpha-linolenic acid (ω-3, C18:3), and gamma-linolenic acid (ω-6, C18:3).

3.4 Flavonoids and Polyphenols

Sea buckthorn berries are highly enriched in flavonoids including quercetin, kaempferol, isorhamnetin, and myricetin. Active components such as isorhamnetin, quercetin, gallic acid, and protocatechuic acid have been found to have significant anti-tumor effects in network pharmacology analyses. The berries and leaves are high in quercetin, making them popular in Tibetan, Ayurvedic, and Chinese medicines.

Because of the nutritional importance of H. rhamnoides fruits, many research groups have investigated the phytochemical constituents, in which flavonoids, proanthocyanidins, alkaloids, and phenolic acids have been identified.

3.5 Phytosterols, Tocopherols, and Minerals

Phytosterols in sea buckthorn include cycloartenol, campesterol, citrostadienol, and sitosterol. The main constituents of neutral lipids in sea buckthorn include phytosterols (70–100% β-sitosterol, α- and β-amyrins, erythrodiol, and other constituents of the unsaponifiable lipid fraction of seeds). Approximately 36 types of flavonoids, fruit acids (malic acid and citric acids), phenolic compounds, and approximately 11 mineral salts including zinc, iron, calcium, selenium, and copper are present, along with tannins, phospholipids, anthocyanins, steroids, sugars, and pectins.

3.6 Organic Acids

In a study of H. rhamnoides fruits, six chemical compounds were identified, including one citric acid derivative, two flavonoids, one phenolic compound, and two megastigmane derivatives. A citric acid derivative, 1,5-dimethyl citrate, effectively inhibited LPS-induced NO production and showed anti-inflammatory effects by inhibiting the expression of pro-inflammatory mediators iNOS and COX-2, and the activity of pro-inflammatory cytokines IL-6 and TNF-α.

3.7 Mechanisms of Action

Bioactive substances like flavonoids and palmitoleic acid found in sea buckthorn enhance biological activity by modulating signaling pathways of AMPK and PI3K/Akt. Sea buckthorn is recognized as a potent natural antioxidant source due to its rich content of vitamins (particularly C and E), carotenoids, flavonoids, phenolic acids, and unsaturated fatty acids. The combined action of these constituents enhances the body's ability to neutralize reactive oxygen species (ROS) and mitigate oxidative damage at the cellular and systemic levels.

The mechanism of action of active components in cardiovascular disease contexts includes anti-inflammatory, lipid oxidation regulation, antioxidant, vascular function modulation, anti-platelet aggregation, autophagy, intestinal microorganism regulation, and cell apoptosis reduction. Palmitoleic acid also functions as a lipid hormone (lipokine): palmitoleic acid functions as a lipokine, signaling from adipose tissue and liver to regulate metabolic function, and studies show it improves insulin sensitivity and reduces hepatic fat accumulation in animal models.

4. Scientific Evidence by Area of Use

4.1 Cardiovascular Health and Lipid Metabolism

Pharmacological studies have evaluated sea buckthorn in cardiovascular diseases, revealing mechanisms of action including anti-inflammatory, lipid oxidation regulation, antioxidant, vascular function modulation, anti-platelet aggregation, autophagy, intestinal microorganism regulation, and cell apoptosis reduction. In clinical trials, sea buckthorn was proven to be effective in managing lipid metabolism, blood pressure, and blood glucose levels in patients.

A systematic review and meta-analysis pooled data from randomized controlled trials. Sea buckthorn is a plant that has long been used as a Chinese herbal medicine. This species contains numerous bioactive components, including polyphenols, fatty acids, vitamins, and phytosterols. In experiments both in vitro and in vivo (ranging from cell lines to animal models and human patients), sea buckthorn has shown positive effects on symptoms of metabolic syndrome; evidence suggests that sea buckthorn treatment can decrease blood lipid content, blood pressure, and blood sugar levels, and regulate key metabolites.

One specific randomized controlled double-blind trial provides granular clinical detail: a randomized controlled double-blind study was conducted on 32 healthy subjects and 74 subjects with hypertension and hypercholesterolemia. The samples were supplemented with 0.75 ml of sea buckthorn seed oil daily for 30 days. The results demonstrated that this intervention normalized systolic and diastolic blood pressure and significantly reduced cholesterol, oxy-LDL, and TG in subjects with hypercholesterolemia. This correlation could be attributed to the high contents of linolenic acid, linoleic acid, and oleic acid found in sea buckthorn seed oil.

A meta-analysis of 11 independent RCTs specifically examined blood lipid profiles. A systematic search for publications was performed using CNKI, EMBASE, PubMed, and Wan Fang databases and was restricted to clinical trials in humans without language restriction.

A meta-analysis on metabolic syndrome factors, however, found more mixed results: sea buckthorn had no effect on blood sugar, blood pressure, and BMI of the overall subjects in that particular pooled analysis, illustrating heterogeneity across trials. There is also an ongoing question about inconsistent findings across RCTs: one updated meta-analysis noted that findings from randomized controlled trials are inconsistent to prove the sustainable use of sea buckthorn berries for cardiometabolic risk factor reduction.

Evidence strength: There are positive signals from multiple RCTs, particularly for blood lipid parameters, but results are heterogeneous across studies. No large, multicenter, phase III–level trial has been completed. The evidence is promising but not conclusive for cardiometabolic endpoints.

4.2 Dry Eye Disease and Ocular Health

The ocular application of sea buckthorn oil is among the most robustly studied clinical uses. The strongest clinical application for sea buckthorn omega-7 is dry eye disease. A well-designed double-blind RCT published in Cornea (2014) tested sea buckthorn seed oil against placebo in 86 patients with dry eye symptoms. Results showed significantly reduced osmolarity of tear film — a key marker of dry eye severity — with effect sizes that were modest but clinically meaningful.

An earlier trial published in the Journal of Nutrition (2010) by Larmo et al. confirmed these effects. The study demonstrated that oral sea buckthorn oil attenuates tear film osmolarity and symptoms in individuals with dry eye. The proposed mechanism involves the incorporation of omega-7 fatty acids into lacrimal gland secretions. Among sea buckthorn plant parts, the pulp oil is a potent candidate for dry eye treatment through the suppression of inflammation of the tear secretion organ, the lacrimal gland; omega-7 monounsaturated fatty palmitoleic acid was identified as an active agent.

The mechanism is proposed to be omega-7 incorporation into meibomian gland lipids and lacrimal gland secretions, improving the quality of the tear film lipid layer.

Evidence strength: Multiple double-blind RCTs support a modest but meaningful benefit for dry eye osmolarity and symptom relief. This is one of the more clinically robust applications of sea buckthorn to date.

4.3 Skin Health and Dermatology

A 12-week randomized, double-blinded, placebo-controlled study found that oral palmitoleic acid effectively improves skin barrier function, and may also be effective in increasing skin elasticity and reducing wrinkles. Palmitoleic acid is naturally present in sebum (skin oil) and plays a role in skin barrier function and antibacterial activity.

Topical use has also been studied. Although small-scale clinical trials for conditions like atopic dermatitis (AD) and burn healing have reported positive outcomes, these studies are often constrained by limitations such as small sample sizes, lack of rigorous blinding, and short follow-up periods, preventing definitive conclusions regarding efficacy and safety.

For postmenopausal mucosal health: sea buckthorn oil reduced vaginal itching, burning, and leakage in patients with Sjögren's syndrome. Oral administration of sea buckthorn oil has been shown to improve vaginal endometrial integrity, vaginal dryness, elasticity, and pH in postmenopausal women.

Evidence strength: Preliminary to moderate. Small RCTs show positive signals for skin barrier function, atopic dermatitis, burn healing, and vaginal mucosal health, but there is an urgent need for large-scale, multi-center, randomized, double-blind, placebo-controlled clinical trials to robustly validate the efficacy and long-term safety of sea buckthorn preparations in well-defined patient populations.

4.4 Liver Protection

Sea buckthorn's phytochemical architecture is linked to demonstrated pharmacological effects including hepatoprotective activities. A clinical study published in the World Journal of Gastroenterology (2003) — referenced in the drugs.com natural standard monograph — examined the effect of sea buckthorn on liver fibrosis. Gao ZL et al. examined the effect of sea buckthorn on liver fibrosis in a clinical study, published in World J Gastroenterol 2003.

Animal model and in vitro data further support hepatoprotection: in vitro trials have shown that sea buckthorn extract with or without atorvastatin for the treatment of hyperlipidemia helped reduce the oxidative damage caused by lipid peroxidation. Studies show sea buckthorn's palmitoleic acid improves insulin sensitivity and reduces hepatic fat accumulation in animal models.

Evidence strength: Primarily preclinical (animal and in vitro). Limited human clinical data exist. Hepatoprotective effects are biologically plausible given the antioxidant and anti-inflammatory composition of the plant, but strong human trial evidence is lacking.

4.5 Anti-inflammatory and Antioxidant Effects

The phenolic constituents of sea buckthorn fruit reduced the concentration of carbonyl groups in plasma protein treated with H₂O₂ or H₂O₂/Fe. When plasma was treated with sea buckthorn phenolic fractions at a concentration of 50 g/mL for 60 min, the inhibition rate of plasma lipid peroxidation was as high as 60%.

A double-blind RCT examined effects on infections and inflammation: Larmo et al. conducted a double-blind, randomized, placebo-controlled trial on the effects of sea buckthorn berries on infections and inflammation, published in Eur J Clin Nutr 2008.

Evidence strength: Strong in vitro and animal evidence for antioxidant and anti-inflammatory mechanisms. Human trial data on inflammation are limited and need replication in larger populations.

4.6 Anti-tumor and Oncology-Relevant Research

Sea buckthorn is widely used by Mongolians and Tibetans for its anti-tumor, antioxidant, and liver-protecting properties. In network pharmacology analyses, active components such as isorhamnetin, quercetin, gallic acid, and protocatechuic acid were found to have significant anti-tumor effects. The research progress and application prospect of sea buckthorn and its active components in anti-tumor types, mechanism of action, liver protection, anti-radiation, and toxicology have been reviewed to provide a theoretical basis for the development of sea buckthorn products in the field of anti-tumor research and clinical application.

Evidence strength: Preclinical only. No completed human clinical trials on oncological endpoints have been identified in the peer-reviewed literature. Findings from network pharmacology and in vitro/in vivo models are hypothesis-generating, not clinically actionable.

4.7 Metabolic Syndrome and Blood Sugar

Sea buckthorn exhibits antioxidant, anti-inflammatory, antimicrobial, antidiabetic, antihyperlipidemic, anticancer, hepatoprotective, neuroprotective, and metabolic regulatory properties, supported by in vitro and in vivo models. However, as noted, a meta-analysis of RCTs found that sea buckthorn had no effect on blood sugar, blood pressure, and BMI of the overall subjects in pooled analysis, suggesting the glucose-lowering effects seen in animal models do not consistently translate to humans.

Evidence strength: Inconsistent across trials. Animal and preclinical data support antidiabetic potential, but human RCT evidence does not consistently confirm glycemic effects.

4.8 Cardiovascular Pharmacological Formulations (Chinese Pharmacopeia)

Pharmaceutical preparations targeting cardiovascular pathologies include Hippophae-based formulations such as Xindakang tablets and encapsulated supplements. These therapeutics are known to mediate hypolipidemic effects, hemodynamic modulation, and microcirculatory enhancement. The pharmacopeial spectrum of Hippophae-derived agents encompasses therapeutic applications across cardiovascular, respiratory, gastrointestinal, and dermatological pathologies.

5. Body Systems and Health Areas

Based on converging traditional use, phytochemical analysis, and the available clinical and preclinical literature, sea buckthorn is associated with the following body systems and health domains:

Cardiovascular system: lipid profile modulation, blood pressure, anti-platelet aggregation, and endothelial function.
Integumentary system (skin and mucosa): skin barrier integrity, wound healing, atopic dermatitis, burn healing, and vaginal mucosal health.
Ocular system: dry eye disease and tear film quality.
Hepatic system: liver fibrosis, hepatic steatosis, and hepatoprotection from toxic oxidative stress.
Respiratory system: sea buckthorn berries and leaves contain a variety of bioactive substances that may be therapeutic to the respiratory system, including fatty acids, carotenoids, phenolic acids, and flavonoids.
Gastrointestinal system: traditionally used for gastric ulcers, slow digestion, and splenic-gastric regulation.
Metabolic system: insulin sensitivity, blood glucose, and obesity-related parameters in preclinical models.
Immune system: used as a medicinal plant in Tibetan and Mongolian traditional medicines, sea buckthorn has multifarious medical properties, including anti-fatigue as well as immunoregulatory effects.
Oncology (preclinical only): in vitro anti-tumor activity of key flavonoid constituents.

6. Dosage Forms and Reported Dosages

The following dosages are reported directly from published studies; they are not recommendations:

Dry eye (sea buckthorn seed/pulp oil, oral): A well-designed double-blind RCT published in Cornea (2014) tested sea buckthorn seed oil against placebo in 86 patients with dry eye symptoms; the dry eye RCT used 2 g/day of berry oil.
Cardiovascular/lipid (sea buckthorn seed oil, oral): A randomized controlled double-blind study was conducted on 32 healthy subjects and 74 subjects with hypertension and hypercholesterolemia; the samples were supplemented with 0.75 ml of sea buckthorn seed oil daily for 30 days.
Oral oil — general therapeutic range cited in clinical literature: most clinical trials report no gastrointestinal side effects, hepatotoxicity, or allergic manifestations at therapeutic doses of 5–20 mL/day for oil or juice, or up to 2 g/day for encapsulated forms.
Skin barrier improvement (oral palmitoleic acid): a 12-week, randomized, placebo-controlled clinical trial evaluated the effects of daily supplementation on skin health in middle-aged women; participants consumed 1,000 mg per day of an omega-7 concentrate (50% palmitoleic acid), and the study reported no supplement-related adverse effects.

Depending on the subspecies, origin, climate, time of harvesting, and processing methods, the chemical and nutritional composition of sea buckthorn berries can vary. This variability means that standardization across commercial preparations is inconsistent, and the dosages reported in individual trials may not be directly transferable across products.

7. Safety, Toxicology, and Notable Interactions

7.1 General Toxicological Profile

The no-observed-adverse-effect level (NOAEL) for rats was determined to be 4.68 g/kg of body weight. A 90-day safety study showed that the NOAEL in rats was 100 mg/kg body weight/day of aqueous fruit extract of sea buckthorn. The maximum tolerated dose of sea buckthorn oil in the acute toxicity study in mice was greater than 18.72 g/kg. Ninety-day repeated oral toxicity tests in rats showed that the NOAEL was 9.36 g/kg body weight.

Even under high dosage administration (10 mL/kg body mass) of sea buckthorn fruit oil, neither genotoxicity nor teratogenicity experiments exhibited any adverse reactions. Sea buckthorn fruit oil does not possess genotoxic or teratogenic effects at the doses tested in animal models.

Long-term consumption of sea buckthorn juice or capsules in human subjects — ranging from 10 days to 6 months — has not shown clinically relevant adverse effects in clinical trials, further supporting its safety profile.

7.2 Carotenodermia

Carotenodermia (yellow to orange discoloration of the skin) was reported in a 45-year-old man after he consumed 100 g/day of sea buckthorn syrup for 6 months. This dose is 5 times the amount usually recommended by empirical healers. The high carotenoid content of pulp oil can cause mild skin yellowing (carotenodermia) at high doses — harmless but cosmetically notable.

7.3 Platelet Aggregation and Anticoagulant Interaction

Sea buckthorn berry oil has been shown to inhibit platelet aggregation. Sea buckthorn berry oil inhibits platelet aggregation, as documented in J Nutr Biochem 2000. Individuals who are pregnant, breastfeeding, have bleeding disorders, or take anticoagulant or antiplatelet medication should avoid sea buckthorn oil unless advised otherwise by a clinician. This interaction is pharmacodynamic — additive antiplatelet or anticoagulant effects are possible when sea buckthorn oil is combined with drugs such as warfarin, aspirin, clopidogrel, or other agents affecting coagulation.

7.4 Topical Safety

Dermatological preparations (creams, oils) carry minimal risk of skin irritation or hypersensitivity. Patch testing on healthy volunteers has shown a low incidence of allergic reactions.

7.5 Limitations of Available Safety Data

There have been no systematic studies of toxicity and safety for any Hippophae product. While studies demonstrate no adverse effects in acute and sub-acute toxicity studies at doses up to 10 mL/kg for 28 days in rats, systematic long-term safety data in humans are lacking. Although sea buckthorn fruit extracts are under preliminary research for their pharmacological effects, there is no high-quality clinical evidence for the ability of Hippophae products to lower the risk of human diseases. As of 2022, no sea buckthorn products are approved as prescription drugs by any national regulatory agency.

8. Overall Evidence Summary

Sea buckthorn contains nearly 200 bioactive compounds and has great benefits to human health, and in vivo, in vitro, and clinical trials in the past five years have demonstrated various health benefits of sea buckthorn. Nonetheless, the overall clinical evidence base remains constrained. Medicinal and pharmacological activities of sea buckthorn have been well investigated using various in vitro and in vivo models as well as limited clinical trials. Sea buckthorn has been scientifically analyzed and many of its traditional uses have been established using several biochemical and pharmacological studies.

Sea buckthorn and its compounds' health-promoting potential warrants further validation not just in vitro and in animal research, but also in clinical trials to identify and/or standardize optimal methods of delivery of biologically active molecules. Persistent challenges include phytochemical standardization and the translational gap between preclinical and clinical research; proposed future research directions are focused on rigorous clinical trials, mechanistic studies, and sustainable exploitation within a circular bioeconomy framework.

References

Health Conditions

Health conditions that Himalaya berry may help support.

No conditions available.

Body Systems

Body systems that Himalaya berry may help support.

No body systems available.