Sea Buckthorn: Benefits, Uses & the Best Products in Canada

Sea buckthorn (Hippophaë rhamnoides) is a thorny shrub that grows from Saskatchewan to the Yukon and produces small bright-orange berries packed with vitamin C, omega-7 fatty acids and carotenoids. It has a long history in traditional Tibetan and Russian medicine, and a growing pile of small RCTs in dermatology, dry-eye and cardiometabolic research. The most credible product is Canadian.

What sea buckthorn actually contains

Per 100 g of berry: 200–800 mg vitamin C (4–15× an orange), 250–500 mg flavonoids (quercetin, isorhamnetin, kaempferol), beta-carotene, vitamin E, and an unusual fatty-acid profile dominated by palmitoleic acid (omega-7) in the pulp oil and alpha-linolenic + linoleic acid in the seed oil.

Most supplements are sold as either pulp oil, seed oil or a blend — the fatty-acid profile differs significantly between them, which matters when you read the research.

Where the evidence actually lands

Dry-eye disease: a 2010 RCT (Larmo et al., 100 participants, 3 months) found 2 g/day of sea buckthorn oil reduced redness and burning in dry-eye patients. Effect was modest but statistically significant. Ophthalmologists in Finland and parts of Europe now occasionally suggest it as adjunct therapy.

Atopic dermatitis and skin barrier: small trials in adults with eczema found seed-oil supplementation (5 g/day) improved trans-epidermal water loss and itching scores over 12 weeks. Mechanism is thought to be the omega-3 + omega-6 + omega-7 profile supporting skin lipid barrier reformation.

Cardiometabolic markers: short trials show modest improvements in LDL, triglycerides and CRP, but no hard outcome data yet.

What is not supported: anti-cancer claims, “immune boosting” claims, weight-loss claims. Skip those.

How to take it — doses that actually match the trials

Oil capsules: 2–5 g/day (typically 4–10 capsules) of cold-pressed seed and pulp oil blend. Take with food — the actives are fat-soluble.

Berry juice: 100–300 mL/day (mixed with water; it is intensely tart). Most Canadian brands recommend 30–60 mL once or twice daily.

Topical: 2–5 drops of seed oil applied to dry, irritated skin patches, mixed into your normal moisturiser.

Best Canadian brands and what to look for

Canada is one of the world’s leading sea-buckthorn producers (Saskatchewan, Manitoba). Look for cold-pressed, supercritical-CO2 or solvent-free extraction; avoid solvent-extracted oils.

Reputable brands: Sibu Beauty (US, widely stocked at Whole Foods Canada), Northern Lights Foods (Saskatchewan), Buckthorn Manitoba, Saskatoon’s SaskMade Marketplace co-ops.

Health Canada NPN required: any sea-buckthorn supplement sold in Canada must carry an NPN (Natural Product Number). If a product doesn’t, it hasn’t been reviewed for purity, potency or labelling accuracy.

Who should be careful

Blood thinners: sea buckthorn has mild antiplatelet activity. If you take warfarin, apixaban or aspirin daily, talk to your prescriber.

Pregnancy: insufficient safety data at supplement doses; food-equivalent berry intake is fine.

Surgery: stop sea buckthorn supplementation 2 weeks before any planned surgery.

The bottom line

Sea buckthorn is one of the better-supported botanical oils for dry eyes and eczema-prone skin, and the Canadian product is world-class. Use it for those specific indications, expect 8–12 weeks before judging effect, and keep an eye on the bleeding-risk caveat.

UnityLife is Canada’s wellness letter. Join the free Sunday edition for one well-researched read per week — sign up here.