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Drug interactions

Budesonide-formoterol + Cyclopenthiazide

Severity: Moderate

Budesonide-formoterol and Cyclopenthiazide: 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

Cyclopenthiazide causes renal potassium loss and formoterol shifts potassium into cells, so combined hypokalemia may be more pronounced. This raises arrhythmia risk in susceptible patients.

What this interaction means in plain words

Budesonide-formoterol and Cyclopenthiazide 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.

Evidence level: Moderate

Why it happens

Additive hypokalemia from thiazide renal potassium wasting and beta-2 mediated cellular uptake.

What to do

Monitor serum potassium regularly, especially with higher formoterol doses. 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 Budesonide-formoterol with Cyclopenthiazide?

MediHelp rates the interaction as moderate. Budesonide-formoterol and Cyclopenthiazide 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. Cyclopenthiazide causes renal potassium loss and formoterol shifts potassium into cells, so combined hypokalemia may be more pronounced. This raises arrhythmia risk in susceptible patients.

How serious is the interaction between Budesonide-formoterol and Cyclopenthiazide?

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 regularly, especially with higher formoterol doses. Replace potassium as needed.

What other medicines interact with Budesonide-formoterol?

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

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