Medication · cns stimulant

Supplements and Dexamfetamine sulfate.

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

Dexamfetamine sulfate, sold under the brand names Amfexa, Dexedrine, is a CNS stimulant prescribed for ADHD or narcolepsy.

Dexamfetamine sulfate is a central nervous system stimulant, prescribed in UK practice for ADHD or narcolepsy. The methylphenidate and amfetamine families dominate. Modafinil sits in the same prescribing space for narcolepsy and shift work sleep disorder. The supplement surface that matters is additive sympathomimetic effect. Caffeine at high doses, yohimbe, bitter orange, ephedra (where available), and heavy preworkout formulations can stack on heart rate, blood pressure, and tremor. The MHRA-flagged combinations include MAOIs (hard contraindicated) and SSRIs at higher doses (where serotonin syndrome becomes a concern if combined with anything else serotonergic). Sleep matters too. Stimulant prescribing usually carries a dosing time discipline (avoid late afternoon), and any sleep supplement combination (magnesium, melatonin, glycine) should be timed accordingly. Cardiovascular screening before starting is recommended by NICE.

We have not yet completed an explicit assessment of supplement interactions with Dexamfetamine sulfate in the Distil database. That is different from saying nothing exists. 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 Dexamfetamine sulfate alongside a supplement, 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 (food-supplement interactions only; for drug-drug interactions, the BNF is authoritative). Use the checker below to surface any supplement, 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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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.

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This page checks the pairs you enter. A personalised Distil report applies the same graded, cited reasoning to your whole stack: your goals, conditions, medications, diet, and the compounds worth adding or dropping. The interactions check is one section of it. You can read a real one in full before you decide.

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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.

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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.