Drug interactions
Topiramate + Trazodone
Severity: Moderate
Topiramate and Trazodone: 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 drugs can cause sedation and cognitive slowing, so combined use may increase drowsiness and impaired concentration. Topiramate is a weak CYP3A4 inducer at higher doses and may modestly reduce trazodone exposure.
What this interaction means in plain words
Topiramate and Trazodone 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.
Topiramate belongs to Central Nervous System; Trazodone belongs to Central Nervous System.
Why it happens
Additive CNS depression and weak dose-dependent CYP3A4 induction by topiramate.
What to do
Monitor for excess sedation and cognitive effects and counsel on driving. Adjust the trazodone dose if efficacy declines.
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 Trazodone
- Arsenic trioxide + Trazodone Contraindicated
- Ibutilide + Trazodone Contraindicated
- Isocarboxazid + Trazodone Contraindicated
- Levoketoconazole + Trazodone Contraindicated
- Methylene blue + Trazodone Contraindicated
- Phenelzine + Trazodone Contraindicated
Other interactions of Topiramate
Frequently asked questions
Can I take Topiramate with Trazodone?
MediHelp rates the interaction as moderate. Topiramate and Trazodone 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 drugs can cause sedation and cognitive slowing, so combined use may increase drowsiness and impaired concentration. Topiramate is a weak CYP3A4 inducer at higher doses and may modestly reduce trazodone exposure.
How serious is the interaction between Topiramate and Trazodone?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for excess sedation and cognitive effects and counsel on driving. Adjust the trazodone dose if efficacy declines.
What other medicines interact with Trazodone?
MediHelp also lists interactions of Trazodone with, for example, Arsenic trioxide, Ibutilide, Isocarboxazid. The full list is on the Trazodone page.
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