Drug interactions
Pentamidine + Trimipramine
Severity: Contraindicated
Pentamidine and Trimipramine: contraindicated 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 can prolong the QT interval, and pentamidine has been linked to torsades de pointes. The combination increases the risk of serious ventricular arrhythmia.
What this interaction means in plain words
Pentamidine and Trimipramine are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.
Pentamidine belongs to Anti Parasitic; Trimipramine belongs to Central Nervous System.
Why it happens
Additive QT prolongation.
What to do
Avoid the combination. If pentamidine is necessary, consider interrupting trimipramine and monitor ECG and electrolytes.
What to ask your pharmacist
- Is there an alternative to one of these two medicines for me?
- If both are essential, who is monitoring me and how often?
- Which symptoms mean I should stop and seek help straight away?
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Other interactions of Trimipramine
- Disopyramide + Trimipramine Contraindicated
- Dofetilide + Trimipramine Contraindicated
- Ibutilide + Trimipramine Contraindicated
- Isocarboxazid + Trimipramine Contraindicated
- Phenelzine + Trimipramine Contraindicated
- Pimozide + Trimipramine Contraindicated
Other interactions of Pentamidine
- Clomipramine + Pentamidine Contraindicated
- Desipramine + Pentamidine Contraindicated
- Dronedarone + Pentamidine Contraindicated
- Moxifloxacin + Pentamidine Contraindicated
- Nortriptyline + Pentamidine Contraindicated
- Pentamidine + Pimozide Contraindicated
Frequently asked questions
Can I take Pentamidine with Trimipramine?
MediHelp rates the interaction as contraindicated. Pentamidine and Trimipramine are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Both agents can prolong the QT interval, and pentamidine has been linked to torsades de pointes. The combination increases the risk of serious ventricular arrhythmia.
How serious is the interaction between Pentamidine and Trimipramine?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination. If pentamidine is necessary, consider interrupting trimipramine and monitor ECG and electrolytes.
What other medicines interact with Trimipramine?
MediHelp also lists interactions of Trimipramine with, for example, Disopyramide, Dofetilide, Ibutilide. The full list is on the Trimipramine page.
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