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Drug interactions

Dichlorphenamide + Omeprazole

Severity: Moderate

Dichlorphenamide and Omeprazole: 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 renal potassium loss, and long-term proton pump inhibitor use can occasionally lower magnesium and secondarily potassium. Combined use may increase the risk of hypokalemia and related arrhythmias.

What this interaction means in plain words

Dichlorphenamide and Omeprazole 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; Omeprazole belongs to Gastrointestinal Tract.

Evidence level: Low

Why it happens

Additive potassium-lowering effects: carbonic anhydrase inhibition increases renal potassium excretion, while PPI-related hypomagnesemia can impair potassium homeostasis.

What to do

Check serum potassium and magnesium at baseline and periodically during combined therapy. Replace electrolytes as needed.

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 Omeprazole?

MediHelp rates the interaction as moderate. Dichlorphenamide and Omeprazole 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 renal potassium loss, and long-term proton pump inhibitor use can occasionally lower magnesium and secondarily potassium. Combined use may increase the risk of hypokalemia and related arrhythmias.

How serious is the interaction between Dichlorphenamide and Omeprazole?

MediHelp rates it moderate, 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 at baseline and periodically during combined therapy. Replace electrolytes as needed.

What other medicines interact with Omeprazole?

MediHelp also lists interactions of Omeprazole with, for example, Mavacamten, Rilpivirine, Acalabrutinib. The full list is on the Omeprazole page.

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

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