NutriDex

The Supplement Research Compendium
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Sea Buckthorn Berry

Hippophae rhamnoides

Antioxidant-rich berry tried for cholesterol, dry eye and mucosal health.

Mixed evidence ⏳Longevity🛡️Gut & Immune

✚ Updated · How we grade evidence

Evidence tier
Mixed
Research weight
Citations
8 verified / 8
Classification
Longevity
❝
What the evidence says. Graded mixed: the headline lipid benefit appears only in people who already have abnormal cholesterol, two older meta-analyses are positive but a newer PRISMA pooled analysis found no effect, and glucose and blood-pressure effects are essentially null. The dry-eye and mucosal signals come from one small group of trials. (Mixed evidence: Conflicting results across studies; benefit uncertain.)

What is Sea Buckthorn Berry?

Sea Buckthorn Berry (Hippophae rhamnoides) is a longevity supplement used for may improve blood lipids in dyslipidemia. NutriDex grades the human evidence as Mixed. Sea buckthorn is a bright-orange berry rich in vitamin C, carotenoids, tocopherols and an unusual omega-7 (palmitoleic) fatty acid. Meta-analyses of randomized trials give a divided picture: two older pooled analyses (11 and 15 RCTs) reported lower triglycerides, total and LDL cholesterol with higher HDL, but the benefit showed up only in people with existing dyslipidemia, and a more recent PRISMA review of 12 RCTs (n=901) found no significant change in any lipid, blood pressure or BMI. Effects on blood sugar are at best slight. The most consistent signals are from oral sea buckthorn oil (2 g/day) modestly blunting tear-film osmolarity in dry eye, and 3 g/day improving vaginal epithelial integrity in postmenopausal women, though these come from a single Finnish research group. Most trials are small, short (4–12 weeks) and heterogeneous in preparation.

Purported Benefits

✓May improve blood lipids in dyslipidemia
✓Eases dry-eye symptoms
✓Supports mucosal moisture
✓Antioxidant / vitamin-C source

Evidence by outcome

The same supplement can be well-proven for one use and unproven for another — here is the human evidence graded outcome by outcome.

OutcomeEvidenceEffectStudies
Improve blood lipids in dyslipidemiaTwo meta-analyses found LDL/TG/TC benefit only in hyperlipidemic subjects, but a newer PRISMA review (12 RCTs) found no lipid change. Mixed ↔ mixed · small 3
Ease dry-eye symptomsOne RCT (n=86) showed 2 g/day oil blunted tear-film osmolarity rise (p=0.04); single research group, mechanism unconfirmed. Preliminary ↑ benefit · small 1
Support postmenopausal vaginal mucosal integritySingle RCT (n=98) of 3 g/day oil improved vaginal epithelial integrity; only a trend on vaginal health index. Preliminary ↑ benefit · small 1
Lower blood glucoseOne crossover trial showed only a slight FPG fall (p=0.045); meta-analysis found no glucose effect. Preliminary ↔ mixed · negligible 2

Dosing & Compounds

Typical Dose
Berry/oil studies used ~2–3 g/day oil or 28–90 mL/day puree for 4–12 weeks; no standardized dose is established.
Active Compounds
Omega-7 (palmitoleic acid) & omega-3/6 fatty acidsCarotenoids & vitamin E (tocopherols)Vitamin CFlavonoids (quercetin, isorhamnetin)

Safety & Cautions

Generally well tolerated as a food; mild GI upset is the main complaint. Because berry/oil intake may modestly lower glucose and blood lipids, it could add to antidiabetic or lipid-lowering drugs, and vitamin-K-containing oil fractions theoretically interact with warfarin and other anticoagulants. Concentrated extracts have not been tested for safety in pregnancy, breastfeeding or with high-dose medications, so favour food amounts and tell your clinician if combining with these drugs. Educational only — always check with your doctor or pharmacist before combining Sea Buckthorn Berry with any medicine.

Key Studies

Meta-analysis Geng 2022 ✓ PubMed
Meta-analysis of 15 RCTs: lowered triglycerides (SMD -0.72), total cholesterol and LDL, raised HDL; no effect on glucose, BP or BMI.
Meta-analysis Guo 2017 ✓ Full text
Meta-analysis of 11 RCTs (>900 people): sea buckthorn improved lipid profile only in hyperlipidemic subjects, not in healthy people.
RCT Ren 2021 ✓ PubMed
Double-blind crossover (n=38, impaired glucose regulation), 90 mL/day puree: only a slight FPG fall (median -0.14 vs +0.07 mmol/L, p=0.045).
RCT Larmo 2010 ✓ PubMed
RCT (n=86 completers), 2 g/day oil x3 mo: rise in tear-film osmolarity was significantly smaller vs placebo in dry-eye subjects (p=0.04).
RCT Jarvinen 2011 ✓ PubMed
Same RCT cohort: oral oil did NOT change tear-film fatty acids vs placebo, so any dry-eye benefit likely acts via another mechanism.
RCT Larmo 2014 ✓ Full text
RCT (n=98 completers), 3 g/day oil x3 mo: improved vaginal epithelial integrity in postmenopausal women; only a trend on vaginal health index.
Review Frontiers Cardiovasc Med 2024 ✓ Full text
Narrative review: human lipid/BP data are mixed and limited; calls for large multicenter trials, noting effects concentrate in at-risk groups.
Review Sola Marsinach 2019 ✓ Full text
Review of sea buckthorn oil fatty acids (omega-3/6/7/9): notes most evidence is from isolated fatty acids, not whole-oil RCTs.
8 sources cited · 8 verified Search all studies on PubMed ↗

Common questions about Sea Buckthorn Berry

What is Sea Buckthorn Berry used for?

Sea Buckthorn Berry is most often taken for May improve blood lipids in dyslipidemia, Eases dry-eye symptoms, Supports mucosal moisture, Antioxidant / vitamin-C source. Antioxidant-rich berry tried for cholesterol, dry eye and mucosal health.

Does Sea Buckthorn Berry work — what does the evidence say?

Mixed evidence. Conflicting results across studies; benefit uncertain. Sea buckthorn is a bright-orange berry rich in vitamin C, carotenoids, tocopherols and an unusual omega-7 (palmitoleic) fatty acid. Meta-analyses of randomized trials give a divided picture: two older pooled analyses (11 and 15 RCTs) reported lower triglycerides, total and LDL cholesterol with higher HDL, but the benefit showed up only in people with existing dyslipidemia, and a more recent PRISMA review of 12 RCTs (n=901) found no significant change in any lipid, blood pressure or BMI. Effects on blood sugar are at best slight. The most consistent signals are from oral sea buckthorn oil (2 g/day) modestly blunting tear-film osmolarity in dry eye, and 3 g/day improving vaginal epithelial integrity in postmenopausal women, though these come from a single Finnish research group. Most trials are small, short (4–12 weeks) and heterogeneous in preparation.

What is the typical dose of Sea Buckthorn Berry?

Berry/oil studies used ~2–3 g/day oil or 28–90 mL/day puree for 4–12 weeks; no standardized dose is established.

Is Sea Buckthorn Berry safe? Any cautions or side effects?

Generally well tolerated as a food; mild GI upset is the main complaint. Because berry/oil intake may modestly lower glucose and blood lipids, it could add to antidiabetic or lipid-lowering drugs, and vitamin-K-containing oil fractions theoretically interact with warfarin and other anticoagulants. Concentrated extracts have not been tested for safety in pregnancy, breastfeeding or with high-dose medications, so favour food amounts and tell your clinician if combining with these drugs.

How many studies support Sea Buckthorn Berry?

NutriDex cites 8 sources for Sea Buckthorn Berry, graded "Mixed".

Cite this page
APA

Peh, D. (2026). Sea Buckthorn Berry (Hippophae rhamnoides): Benefits, Dosage, Side Effects & Evidence. NutriDex — The Supplement Research Compendium. Retrieved 26 Jun 2026, from https://nutridex.info/s/sea-buckthorn-berry

BibTeX
@misc{nutridex_sea_buckthorn_berry,
  author       = {Peh, Daryl},
  title        = {Sea Buckthorn Berry (Hippophae rhamnoides): Benefits, Dosage, Side Effects \& Evidence},
  year         = {2026},
  howpublished = {NutriDex --- The Supplement Research Compendium},
  url          = {https://nutridex.info/s/sea-buckthorn-berry},
  note         = {Reviewed by Dr Daryl Peh, MBBS Singapore, MMed FM. Accessed 2026-06-26}
}

For medical claims, citing the underlying primary studies linked above is preferred. NutriDex is an educational reference, not medical advice.

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