Supplements and Zolmitriptan.
Zolmitriptan, sold under the brand names Zomig, Zomig Rapimelt, is an analgesic.
Zolmitriptan is a second-generation triptan, a 5-HT1B/1D agonist for acute migraine with better oral bioavailability and brain penetration than sumatriptan. The same class rules apply: the 5-HT1B coronary vasoconstriction makes it contraindicated in ischaemic heart disease and uncontrolled hypertension, and overuse drives medication-overuse headache. Its metabolism splits between hepatic CYP1A2, which produces an active metabolite, and monoamine oxidase A, so two interaction routes matter. CYP1A2 inhibition, most clearly from the antidepressant fluvoxamine, raises zolmitriptan levels (Millson 2000). MAO-A inhibitors do the same and are a formal contraindication rather than a caution. On the supplement side the ones to flag are serotonergic products (St John's Wort, 5-HTP, rhodiola, tryptophan), on a theoretical serotonin-syndrome basis that is genuinely contested: serotonin syndrome runs chiefly through the 5-HT2A receptor, which triptans do not activate, and no direct triptan-plus-supplement case exists. The American Headache Society found the evidence too thin to restrict co-prescribing while advising vigilance (Evans 2010).
Below are the 6 documented pairs we have explicitly assessed against Zolmitriptan in the Distil database: 6 amber. The pairs cluster around 1 mechanism: Additive serotonergic activity. Every call is cited to either a clinical reference (PMID) or the British National Formulary. Anything not on this list is either still to be assessed or beyond our database scope. The checker beneath surfaces assessments by supplement, and the missing-item form at the bottom of the page routes any uncatalogued supplement into our next curation pass.
Documented interactions
Last reviewed 22 June 2026. Each interaction below lists the evidence its assessment drew on: some rest on studies of the exact pair, others on mechanism evidence, where a citation may support one part of the reasoning rather than the exact combination. The evidence line on each entry says which.
Additive serotonergic activity
Amber Does 5-HTP interact with ?
5-HTP is the direct building block your body turns into serotonin, and zolmitriptan is a serotonin-receptor drug used for migraine. In theory, taking them together could add to your serotonin activity. The evidence that triptans actually cause this problem is weak and most people tolerate the combination, but it is worth telling your GP you take 5-HTP, especially if you are also on an antidepressant, and being alert to symptoms like agitation, sweating, tremor, fast heartbeat or confusion.
Evidence: Limited human data, based on case reports and a known mechanism.
Reviewer-flagged: awaiting clinical-reviewer sign-off.
Amber Does L-Tryptophan interact with ?
Tryptophan is the building block your body uses to make serotonin, and zolmitriptan is a serotonin-receptor drug used for migraine. In theory the two together could raise serotonin activity. The real-world risk looks low and most people tolerate the combination, but be alert to symptoms like agitation, sweating, shivering, tremor, muscle twitching, or a racing heart, and mention the tryptophan to your GP, especially if you also take an antidepressant.
Evidence: Limited human data, based on case reports and a known mechanism.
Reviewer-flagged: awaiting clinical-reviewer sign-off.
Amber Does Rhodiola Rosea interact with ?
Rhodiola has mild effects on serotonin pathways, and zolmitriptan is a serotonin-receptor drug used for migraine, so in theory taking them together could add to that serotonin effect. The real-world risk looks low and most people tolerate it, but it is worth mentioning the rhodiola to your GP, especially if you also take an antidepressant. If you notice restlessness, sweating, tremor, or a racing heart, stop and seek advice.
Evidence: Based on an established mechanism, with no direct study of this exact combination yet.
Reviewer-flagged: awaiting clinical-reviewer sign-off.
Amber Does SAMe interact with ?
SAMe has its own antidepressant, serotonin-related activity, and zolmitriptan is a serotonin-receptor drug used for migraine. In theory they could add to each other's serotonin effect. Most people tolerate the combination and the real-world risk looks low, but it is worth telling your GP, and seek help if you notice agitation, sweating, shivering, tremor, or a racing heart, especially if you also take an antidepressant.
Evidence: Based on an established mechanism, with no direct study of this exact combination yet.
Reviewer-flagged: awaiting clinical-reviewer sign-off.
Amber Does Saffron Extract interact with ?
Saffron has its own mild antidepressant effect that appears to act on serotonin, and zolmitriptan is a serotonin-receptor drug used for migraine. Taking them together may add to that serotonin effect. Most people tolerate it, but mention the saffron to your GP, especially if you also take an antidepressant.
Evidence: Limited human data, based on case reports and a known mechanism.
Reviewer-flagged: awaiting clinical-reviewer sign-off.
Amber Does St John's Wort interact with ?
St John's Wort raises serotonin in its own right, and zolmitriptan is a serotonin-receptor drug for migraine. In theory the two could add up, though the evidence that triptans trigger serotonin syndrome is weak and most people tolerate the combination. Be alert to agitation, sweating, tremor, shivering or a racing heart, and mention the St John's Wort to your GP, especially if you also take an antidepressant.
Evidence: Limited human data, based on case reports and a known mechanism.
Reviewer-flagged: awaiting clinical-reviewer sign-off.
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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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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The free checker answers one interaction question at a time. A Distil report reviews the bigger picture: your goals, diet, medications, current supplements and any blood results you provide, then shows what appears worth keeping, changing, adding or leaving out.
- what your diet already covers, so you are not adding a capsule for something food is already handling
- which evidence-graded compounds are worth considering for your goals, and which were considered but left out
- what to keep, change or stop from what you already take, plus the order to introduce anything new
- how your medications and complete supplement stack fit together, with daily timing and a clear point for reassessment
The interaction check is one section of the full report. You also get the reasoning behind each recommendation and the evidence references used.
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