Supplement · Grade A

Xylitol and medications.

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

Xylitol is in the Distil supplement database, evidence Grade A. The page below lists every medication we have explicitly assessed it against.

Xylitol is a sugar alcohol used mainly for dental health, where it earns a Grade A. It inhibits Streptococcus mutans, the main caries-causing bacterium, supports enamel remineralisation, relieves dry mouth, and reduces oral Candida. The mechanism depends on frequency of contact rather than total dose, so the usual approach is 5 to 10g a day split across at least four to six exposures through gum, lozenges, or granules. The evidence is solid for caries prevention, with a long cohort study and a Cochrane review backing it, though the benefit hinges on consistent repeated use rather than a single daily dose. On interactions, xylitol is unusually clean: no significant drug interactions are recognised. The one critical safety point is unrelated to medication. Xylitol is fatal to dogs even in small amounts, so any household with a dog must store and use it carefully. Side effects in people are limited to loose stools well above the supplement range. A practical, low-risk tool for teeth, with the dog warning being the part most people overlook.

We have not yet completed an explicit assessment of medications for Xylitol 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 Xylitol 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.

Anything we should know? (optional)

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Your supplements

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Your medications

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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

Something missing?

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.

Thanks, that's logged. We go through flagged items every week.

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.