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.
Outcome
Evidence
Effect
Studies
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.
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.
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 9 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 16 Sept 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 2026-09-16}
}
For medical claims, citing the underlying primary studies linked above is preferred. NutriDex is an educational reference, not medical advice.