Drug interactions
Clomipramine + Pefloxacin
Severity: Moderate
Clomipramine and Pefloxacin: 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
Pefloxacin inhibits CYP1A2, one of the pathways metabolising clomipramine, so levels may rise and cause tricyclic adverse effects. Fluoroquinolones can also prolong the QT interval and lower the seizure threshold.
What this interaction means in plain words
Clomipramine and Pefloxacin 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.
Clomipramine belongs to Central Nervous System; Pefloxacin belongs to Anti Bacterial.
Why it happens
CYP1A2 inhibition by pefloxacin reduces clomipramine clearance, with additive QT and seizure-threshold effects.
What to do
Monitor for anticholinergic, cardiac and neurological toxicity and consider an ECG; choose a non-quinolone antibiotic if possible.
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 Clomipramine
- Arsenic trioxide + Clomipramine Contraindicated
- Clomipramine + Dofetilide Contraindicated
- Clomipramine + Droperidol Contraindicated
- Clomipramine + Isocarboxazid Contraindicated
- Clomipramine + Methylene blue Contraindicated
- Clomipramine + Pentamidine Contraindicated
Other interactions of Pefloxacin
- Pefloxacin + Tizanidine Contraindicated
- Clozapine + Pefloxacin Major
- Duloxetine + Pefloxacin Major
- Pefloxacin + Theophylline Major
- Asenapine + Pefloxacin Moderate
- Caffeine + Pefloxacin Moderate
Frequently asked questions
Can I take Clomipramine with Pefloxacin?
MediHelp rates the interaction as moderate. Clomipramine and Pefloxacin 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. Pefloxacin inhibits CYP1A2, one of the pathways metabolising clomipramine, so levels may rise and cause tricyclic adverse effects. Fluoroquinolones can also prolong the QT interval and lower the seizure threshold.
How serious is the interaction between Clomipramine and Pefloxacin?
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 anticholinergic, cardiac and neurological toxicity and consider an ECG; choose a non-quinolone antibiotic if possible.
What other medicines interact with Clomipramine?
MediHelp also lists interactions of Clomipramine with, for example, Arsenic trioxide, Dofetilide, Droperidol. The full list is on the Clomipramine page.
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