InfoSynergy
Omega-7
Sea buckthorn oil is itself a common omega-7 source, so combining with separate omega-7 can duplicate palmitoleic acid exposure.
Recommendation: Avoid duplicate omega-7 products unless intentionally targeting a higher total dose.
Sea Buckthorn Oil
Omega/Fatty Acid ·Emerging evidence ·Reviewed May 2026
Sea buckthorn oil is a fatty acid-rich oil from Hippophae rhamnoides seed, pulp, or berry used for mucosal dryness, skin dryness, and vaginal dryness in menopause. A randomized trial in postmenopausal women found improvement in some vaginal epithelial integrity outcomes with 3 g/day, but symptom effects were modest and not equivalent to estrogen therapy. It should be used cautiously with anticoagulant or antiplatelet therapy and should not delay evaluation of pain, bleeding, or infection.
What it's good for
What to watch for
- Fishy or oily burps
- Nausea
- Loose stools
- Pregnancy and breastfeeding without clinician guidance
- Use with anticoagulants or antiplatelet drugs without clinician review
The bottom line
Evidence rating emerging. Most-documented uses: may support vaginal mucosal integrity in postmenopausal dryness, may support dry eye or mucosal dryness symptoms, may improve skin hydration in some users. 3 sources indexed (2014–2024), with 3 interaction records on file.
The science
How it works, mechanistically.
Core mechanism
Sea buckthorn oil supplies palmitoleic acid, linoleic acid, alpha-linolenic acid, oleic acid, tocopherols, carotenoids, and phytosterols. These lipids may support epithelial barrier function, mucosal hydration, and inflammatory balance in skin and urogenital tissues. Effects depend strongly on whether the product is seed oil, pulp oil, berry oil, or a mixed oil because fatty acid and carotenoid profiles differ.2,1
Class
Omega-7 and carotenoid-rich botanical oil
Found in food
Sea buckthorn berries, Sea buckthorn juice, Sea buckthorn seed oil
Low-status signs
None - sea buckthorn oil is not essential and has no deficiency state
Absorption
Fat-soluble; take with food
Dosing
Dosing & protocol.
Common range
1-3 g/day oil softgels; 3 g/day was used in a postmenopausal vaginal atrophy trial
Recommended form
Mixed sea buckthorn seed and berry oil with disclosed palmitoleic acid content
Take with meals to improve tolerability and absorption of fat-soluble carotenoids and tocopherols.
Forms
Forms & what to buy.
Ranked by evidence and value.
Mixed Seed and Berry Oil Softgel Recommended
Provides a broader fatty acid and carotenoid profile than seed oil alone. Take with meals.
Sea Buckthorn Pulp Oil
Typically higher in palmitoleic acid and carotenoids. Take with fat-containing meal.
Sea Buckthorn Seed Oil
Typically higher in linoleic and alpha-linolenic acids than pulp oil. Take with food.
Cost
What it actually costs.
Real-world pricing across three quality tiers. Assumes Mixed sea buckthorn oil softgel.
BudgetBest value
$8 /mo
$0.25 per dose
Mid
$21 /mo
$0.70 per dose
Premium
$48 /mo
$1.60 per dose
Pulp oils and products standardized to palmitoleic acid are usually more expensive. Updated 2026-06-04.
Goals
Goal-based dosing.
Vaginal Dryness Support
Timing: With meals
Assess after 8-12 weeks; use clinician-directed therapy for moderate or severe genitourinary syndrome of menopause.
Skin Dryness Support
Dose: 1-2 g/day2
Timing: With meals
Pair with topical moisturizers and barrier care.
Mucosal Dryness Support
Dose: 1-3 g/day
Timing: With food
Evidence is emerging and symptom response may be subtle.
Why people use it
Symptoms it's matched to.
Where this appears in the symptom-to-supplement map, ranked by relevance.
Vaginal dryness
58% relevance
Fatty acids and lipophilic antioxidants may support mucosal epithelial barrier function.2,3
HormoneEmerging evidenceMixed sea buckthorn oil
Use medical evaluation for bleeding, pain, or recurrent infection.
Safety
Full safety detail.
Side effects
- Fishy or oily burps
- Nausea
- Loose stools
- Orange discoloration of stool or skin with high carotenoid intake
- Allergic reaction
- Possible increased bleeding tendency in susceptible users
Interactions
Interaction records.
ModerateCaution
Fish Oil
Combining multiple fatty acid oils can increase GI side effects and may modestly increase bleeding tendency in susceptible users.
Recommendation: Use caution with anticoagulants, antiplatelet drugs, bleeding disorders, or upcoming surgery.
ModerateCaution
Vitamin E
Sea buckthorn oil contains tocopherols, and high-dose vitamin E may add bleeding-risk concerns.
Recommendation: Avoid high-dose vitamin E stacking when bleeding risk is elevated.
Sources
Sources, by evidence tier.
Numbered references. Citations throughout the page link here.
Meta-analyses & systematic reviews
1- 1Therapeutic Approaches to Atrophic Vaginitis in Postmenopausal Women: A Systematic Review with a Network Meta-analysis of Randomized Controlled TrialsNeeds reviewNo linkKim HK et al. · Journal of Menopausal Medicine · 2018
Sea buckthorn oil appeared among nonhormonal interventions, but evidence was much less robust than estrogen therapies.
Randomized controlled trials
2- 2The impact of oral sea-buckthorn oil on skin, blood markers, ocular, and vaginal health: A randomized control trialNeeds reviewNo linkDudau M et al. · Journal of Functional Foods · 2024
A small modern trial evaluated skin, ocular, vaginal, and blood marker outcomes with sea buckthorn oil.
- 3Effects of sea buckthorn oil intake on vaginal atrophy in postmenopausal women: A randomized, double-blind, placebo-controlled studyNeeds reviewNo linkLarmo PS et al. · Maturitas · 2014
Three grams daily improved the rate of improvement in vaginal epithelial integrity in one analysis.
Keep exploring
Deep dives & adjacent profiles.
This page is educational. Do not start, stop, or change a supplement or medication based on it without checking with a qualified healthcare professional.
Use this with your stack
Sea Buckthorn Oil in NutriStack.
Add it to your stack, see how it interacts with everything else you take, and get a Stack Score that updates the moment it does.