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Drug interactions

Dichlorphenamide + Nilotinib

Severity: Major

Dichlorphenamide and Nilotinib: 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

Dichlorphenamide causes renal potassium loss and metabolic acidosis, which can lead to hypokalemia. Nilotinib prolongs the QT interval and hypokalemia increases the risk of torsades de pointes, so the combination raises arrhythmia risk.

What this interaction means in plain words

Dichlorphenamide and Nilotinib 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.

Dichlorphenamide belongs to Miscellaneous; Nilotinib belongs to Oncology.

Evidence level: Moderate

Why it happens

Additive pharmacodynamic effect: carbonic anhydrase inhibitor-induced hypokalemia potentiates nilotinib-related QT prolongation.

What to do

Check serum potassium and magnesium before starting and periodically during therapy, and correct deficits promptly. Obtain a baseline and follow-up ECG for QTc.

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?

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 Dichlorphenamide with Nilotinib?

MediHelp rates the interaction as major. Dichlorphenamide and Nilotinib 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. Dichlorphenamide causes renal potassium loss and metabolic acidosis, which can lead to hypokalemia. Nilotinib prolongs the QT interval and hypokalemia increases the risk of torsades de pointes, so the combination raises arrhythmia risk.

How serious is the interaction between Dichlorphenamide and Nilotinib?

MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check serum potassium and magnesium before starting and periodically during therapy, and correct deficits promptly. Obtain a baseline and follow-up ECG for QTc.

What other medicines interact with Nilotinib?

MediHelp also lists interactions of Nilotinib with, for example, Amiodarone, Arsenic trioxide, Disopyramide. The full list is on the Nilotinib page.

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