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Drug interactions

Mirtazapine + Sumatriptan

Severity: Moderate

Mirtazapine 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

Concurrent use may theoretically increase the risk of serotonin syndrome. Reports are rare and the combination is commonly used in practice without problems.

What this interaction means in plain words

Mirtazapine 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.

Mirtazapine belongs to Central Nervous System; Sumatriptan belongs to Central Nervous System.

Evidence level: Low

Why it happens

Additive serotonergic effects from 5-HT1B/1D agonism and mirtazapine's modulation of serotonergic transmission.

What to do

Use the lowest effective triptan dose and educate the patient on serotonin syndrome symptoms. Discontinue and treat if symptoms such as clonus, hyperthermia or agitation occur.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Mirtazapine with Sumatriptan?

MediHelp rates the interaction as moderate. Mirtazapine 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. Concurrent use may theoretically increase the risk of serotonin syndrome. Reports are rare and the combination is commonly used in practice without problems.

How serious is the interaction between Mirtazapine 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: Use the lowest effective triptan dose and educate the patient on serotonin syndrome symptoms. Discontinue and treat if symptoms such as clonus, hyperthermia or agitation occur.

What other medicines interact with Mirtazapine?

MediHelp also lists interactions of Mirtazapine with, for example, Isocarboxazid, Phenelzine, Pimozide. The full list is on the Mirtazapine page.

Full monographs, dosing and an interaction checker in the MediHelp app

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