Supplement · Grade B

Omega-7 and medications.

Not yet catalogued in the Distil interactions database. We surface that distinction explicitly.

Omega-7 is in the Distil supplement database, evidence Grade B. The page below lists every medication we have explicitly assessed it against.

Omega-7, mainly palmitoleic acid from sea buckthorn oil, is a fatty acid taken for mucosal membrane health, with interest in metabolic and cardiovascular support. The evidence is Grade B for mucosal and metabolic uses, including a genuinely useful niche: easing vaginal dryness and dry-eye symptoms around menopause, where one decent trial showed it eased tear-film problems. The honest limit is that the broader metabolic and cardiovascular claims rest on smaller studies, so the mucosal angle is the strongest reason to consider it. The typical dose is 210 to 500mg of sea buckthorn oil daily. It is most relevant for peri- and post-menopausal women dealing with dryness, and for anyone focused on gut-lining and mucosal health. No significant interactions are documented, and it is well tolerated, with occasional mild stomach upset the main complaint. A practical note: mucosal benefits build slowly, so give it two to three months before judging the effect.

We have not yet completed an explicit assessment of medications for Omega-7 in the Distil interactions database. We surface this distinction deliberately: the Distil checker tells you when we have explicitly assessed a pair and when we have not, because both are useful information. If you take Omega-7 alongside a medication, the checker below will surface anything already in our database, and the missing-item form at the bottom of the page routes uncatalogued pairs into our next curation pass.

What this list does not say. Pairs not flagged here are not implicitly safe. They are either not yet in our database, or fall outside our inclusion scope. Use the checker below to surface any medication, and submit a missing item if you take something we have not catalogued.

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For adults over 18. This tool gives evidence-graded information, not medical advice. Always discuss changes with your GP, especially if you take any medication, are pregnant, breastfeeding, or have a serious health condition.

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Your supplements

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How we decide

How we grade severity, choose what's in scope, and what we exclude.

Every call on this page is reasoned. We publish the full rubric for severity tiers, the medication inclusion logic, the evidence grades we accept, and what we deliberately leave out. About three thousand words. Worth reading once if you use this tool more than occasionally.

Read the full methodology

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If a supplement or medication you take isn't in our autocomplete, tell us. We go through what people flag every week and add what's missing.

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Distil's interactions database is reviewed and updated every quarter. We grade evidence transparently and publish our methodology, including every database change, at /about/methodology. This tool is information, not a substitute for clinical judgement. If you take medication and supplements together, your GP or pharmacist can review your full regimen against your medical history. If you want a full personalised stack reasoned against this same database, the Distil report is the next step up.