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Drug interactions

Dichlorphenamide + Sunitinib

Severity: Moderate

Dichlorphenamide and Sunitinib: 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

Dichlorphenamide causes potassium loss and metabolic acidosis, which can predispose to arrhythmia in patients taking QT-prolonging sunitinib. The combined effect may be clinically relevant in patients with other risk factors.

What this interaction means in plain words

Dichlorphenamide and Sunitinib 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.

Dichlorphenamide belongs to Miscellaneous; Sunitinib belongs to Oncology.

Evidence level: Low

Why it happens

Dichlorphenamide-induced hypokalemia adds to sunitinib's QT-prolonging potential.

What to do

Monitor potassium, magnesium and bicarbonate and replace as needed. Consider an ECG if other QT risk factors exist.

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?

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 Sunitinib?

MediHelp rates the interaction as moderate. Dichlorphenamide and Sunitinib 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. Dichlorphenamide causes potassium loss and metabolic acidosis, which can predispose to arrhythmia in patients taking QT-prolonging sunitinib. The combined effect may be clinically relevant in patients with other risk factors.

How serious is the interaction between Dichlorphenamide and Sunitinib?

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 potassium, magnesium and bicarbonate and replace as needed. Consider an ECG if other QT risk factors exist.

What other medicines interact with Sunitinib?

MediHelp also lists interactions of Sunitinib with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Sunitinib page.

Full monographs, dosing and an interaction checker in the MediHelp app

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