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Drug interactions

Mirtazapine + Naratriptan

Severity: Moderate

Mirtazapine and Naratriptan: 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

Both agents affect serotonergic signaling, so combined use carries a theoretical risk of serotonin syndrome. Documented cases with triptans and antidepressants are rare.

What this interaction means in plain words

Mirtazapine and Naratriptan 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; Naratriptan belongs to Central Nervous System.

Evidence level: Low

Why it happens

Additive serotonergic effects: 5-HT1B/1D agonism from naratriptan plus mirtazapine's enhancement of serotonergic transmission.

What to do

Counsel the patient to report agitation, tremor, sweating, diarrhea or fever after a triptan dose. Stop the triptan and treat if serotonin syndrome is suspected.

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 Naratriptan?

MediHelp rates the interaction as moderate. Mirtazapine and Naratriptan 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. Both agents affect serotonergic signaling, so combined use carries a theoretical risk of serotonin syndrome. Documented cases with triptans and antidepressants are rare.

How serious is the interaction between Mirtazapine and Naratriptan?

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 to report agitation, tremor, sweating, diarrhea or fever after a triptan dose. Stop the triptan and treat if serotonin syndrome is suspected.

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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