Drug interactions
Cyclopenthiazide + Dexamethasone
Severity: Moderate
Cyclopenthiazide and Dexamethasone: 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 agents promote potassium loss, so combined use increases the risk of hypokalemia, particularly in patients on digoxin or with arrhythmia risk.
What this interaction means in plain words
Cyclopenthiazide and Dexamethasone 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.
Why it happens
Additive renal potassium excretion.
What to do
Monitor serum potassium and replace or add a potassium-sparing agent if low.
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?
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Other interactions of Dexamethasone
- Bcg vaccine live + Dexamethasone Contraindicated
- Dexamethasone + Mifepristone Contraindicated
- Dexamethasone + Rilpivirine Contraindicated
- Dexamethasone + Smallpox vaccine live Contraindicated
- Dexamethasone + Varicella virus vaccine live Contraindicated
- Dexamethasone + Yellow fever vaccine Contraindicated
Frequently asked questions
Can I take Cyclopenthiazide with Dexamethasone?
MediHelp rates the interaction as moderate. Cyclopenthiazide and Dexamethasone 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 agents promote potassium loss, so combined use increases the risk of hypokalemia, particularly in patients on digoxin or with arrhythmia risk.
How serious is the interaction between Cyclopenthiazide and Dexamethasone?
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 replace or add a potassium-sparing agent if low.
What other medicines interact with Dexamethasone?
MediHelp also lists interactions of Dexamethasone with, for example, Bcg vaccine live, Mifepristone, Rilpivirine. The full list is on the Dexamethasone page.
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