Drug interactions
Dexamethasone + Squill
Severity: Major
Dexamethasone and Squill: major 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
Squill contains cardiac glycosides. Dexamethasone can cause hypokalemia, which sensitizes the myocardium to glycoside toxicity and may provoke arrhythmias.
What this interaction means in plain words
Dexamethasone and Squill can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Corticosteroid-induced potassium loss increases the sensitivity of the heart to cardiac glycoside effects.
What to do
Avoid the combination where possible. If used together, monitor serum potassium and magnesium and ECG and correct deficits promptly.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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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 Dexamethasone with Squill?
MediHelp rates the interaction as major. Dexamethasone and Squill can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Squill contains cardiac glycosides. Dexamethasone can cause hypokalemia, which sensitizes the myocardium to glycoside toxicity and may provoke arrhythmias.
How serious is the interaction between Dexamethasone and Squill?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination where possible. If used together, monitor serum potassium and magnesium and ECG and correct deficits promptly.
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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