Drug interactions
Amoxapine + Sumatriptan
Severity: Moderate
Amoxapine and Sumatriptan: moderate 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
Triptans combined with serotonergic antidepressants such as amoxapine may rarely cause serotonin syndrome, with agitation, tremor, hyperthermia and autonomic instability. The absolute risk is low, but the outcome can be serious.
What this interaction means in plain words
Amoxapine and Sumatriptan can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Additive serotonergic activity through 5-HT1 agonism by sumatriptan and reuptake inhibition by amoxapine.
What to do
Counsel the patient on symptoms of serotonin syndrome and monitor, particularly after starting or raising either dose. Stop both drugs and give supportive care if symptoms develop.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Sumatriptan
- Almotriptan + Sumatriptan Contraindicated
- Dihydroergotamine intranasal + Sumatriptan Contraindicated
- Dihydroergotamine + Sumatriptan Contraindicated
- Eletriptan + Sumatriptan Contraindicated
- Ergoloid mesylates + Sumatriptan Contraindicated
- Ergotamine + Sumatriptan Contraindicated
Frequently asked questions
Can I take Amoxapine with Sumatriptan?
MediHelp rates the interaction as moderate. Amoxapine and Sumatriptan can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Triptans combined with serotonergic antidepressants such as amoxapine may rarely cause serotonin syndrome, with agitation, tremor, hyperthermia and autonomic instability. The absolute risk is low, but the outcome can be serious.
How serious is the interaction between Amoxapine and Sumatriptan?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Counsel the patient on symptoms of serotonin syndrome and monitor, particularly after starting or raising either dose. Stop both drugs and give supportive care if symptoms develop.
What other medicines interact with Sumatriptan?
MediHelp also lists interactions of Sumatriptan with, for example, Almotriptan, Dihydroergotamine intranasal, Dihydroergotamine. The full list is on the Sumatriptan page.
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