Drug interactions
Frovatriptan + Lorcaserin
Severity: Major
Frovatriptan and Lorcaserin: major interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Both drugs enhance serotonergic activity, so combined use may precipitate serotonin syndrome with agitation, tremor, hyperthermia and autonomic instability. The risk is largely theoretical but potentially serious.
What this interaction means in plain words
Frovatriptan and Lorcaserin can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Additive serotonergic effects from 5-HT1B/1D agonism by frovatriptan and 5-HT2C agonism by lorcaserin.
What to do
Avoid combining where possible; if used together, counsel the patient on serotonin syndrome symptoms and monitor, especially after dose changes.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Frovatriptan
- Almotriptan + Frovatriptan Contraindicated
- Dihydroergotamine intranasal + Frovatriptan Contraindicated
- Dihydroergotamine + Frovatriptan Contraindicated
- Eletriptan + Frovatriptan Contraindicated
- Ergoloid mesylates + Frovatriptan Contraindicated
- Ergotamine + Frovatriptan Contraindicated
Frequently asked questions
Can I take Frovatriptan with Lorcaserin?
MediHelp rates the interaction as major. Frovatriptan and Lorcaserin can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Both drugs enhance serotonergic activity, so combined use may precipitate serotonin syndrome with agitation, tremor, hyperthermia and autonomic instability. The risk is largely theoretical but potentially serious.
How serious is the interaction between Frovatriptan and Lorcaserin?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid combining where possible; if used together, counsel the patient on serotonin syndrome symptoms and monitor, especially after dose changes.
What other medicines interact with Frovatriptan?
MediHelp also lists interactions of Frovatriptan with, for example, Almotriptan, Dihydroergotamine intranasal, Dihydroergotamine. The full list is on the Frovatriptan page.
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