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Drug interactions

Deflazacort + Isoproterenol

Severity: Moderate

Deflazacort and Isoproterenol: 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

Both drugs can lower serum potassium, so combined use may produce additive hypokalemia. This can predispose to arrhythmias, particularly in patients with cardiac disease or other risk factors.

What this interaction means in plain words

Deflazacort and Isoproterenol 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.

Deflazacort belongs to Miscellaneous; Isoproterenol belongs to Respiratory.

Evidence level: Moderate

Why it happens

Corticosteroid mineralocorticoid effect increases renal potassium loss while beta-agonist stimulation shifts potassium into cells, giving additive hypokalemia.

What to do

Monitor serum potassium and ECG in at-risk patients and replace potassium 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 Deflazacort with Isoproterenol?

MediHelp rates the interaction as moderate. Deflazacort and Isoproterenol 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. Both drugs can lower serum potassium, so combined use may produce additive hypokalemia. This can predispose to arrhythmias, particularly in patients with cardiac disease or other risk factors.

How serious is the interaction between Deflazacort and Isoproterenol?

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 serum potassium and ECG in at-risk patients and replace potassium as needed.

What other medicines interact with Deflazacort?

MediHelp also lists interactions of Deflazacort with, for example, Adenovirus types 4 and 7 live, Bcg vaccine live, Influenza virus vaccine quadrivalent intranasal. The full list is on the Deflazacort page.

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

Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.

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