Drug interactions
Pentamidine + Sotalol
Severity: Major
Pentamidine and Sotalol: major 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
Systemic pentamidine is associated with QT prolongation and torsades de pointes, and sotalol adds to this proarrhythmic potential. Pentamidine can also cause hypoglycemia and electrolyte disturbances that further raise risk.
What this interaction means in plain words
Pentamidine and Sotalol can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Pentamidine belongs to Anti Parasitic; Sotalol belongs to Cardiovascular.
Why it happens
Additive QT prolongation via cardiac potassium channel blockade.
What to do
Avoid if alternatives exist; if pentamidine is essential, monitor ECG continuously, and check potassium, magnesium, and glucose. Consider temporarily withholding sotalol under cardiology advice.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Sotalol
- Arsenic trioxide + Sotalol Contraindicated
- Artemether / lumefantrine + Sotalol Contraindicated
- Disopyramide + Sotalol Contraindicated
- Dofetilide + Sotalol Contraindicated
- Dronedarone + Sotalol Contraindicated
- Droperidol + Sotalol 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 Sotalol?
MediHelp rates the interaction as major. Pentamidine and Sotalol can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Systemic pentamidine is associated with QT prolongation and torsades de pointes, and sotalol adds to this proarrhythmic potential. Pentamidine can also cause hypoglycemia and electrolyte disturbances that further raise risk.
How serious is the interaction between Pentamidine and Sotalol?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid if alternatives exist; if pentamidine is essential, monitor ECG continuously, and check potassium, magnesium, and glucose. Consider temporarily withholding sotalol under cardiology advice.
What other medicines interact with Sotalol?
MediHelp also lists interactions of Sotalol with, for example, Arsenic trioxide, Artemether / lumefantrine, Disopyramide. The full list is on the Sotalol page.
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