Drug interactions
Spironolactone + Telmisartan-amlodipine
Severity: Major
Spironolactone and Telmisartan-amlodipine: 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
Telmisartan and spironolactone both reduce potassium excretion, so combining them can cause clinically significant hyperkalemia. The risk is greatest in renal impairment, diabetes, older age or with potassium supplements.
What this interaction means in plain words
Spironolactone and Telmisartan-amlodipine 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.
Spironolactone belongs to Cardiovascular; Telmisartan-amlodipine belongs to Cardiovascular.
Why it happens
Additive suppression of aldosterone-mediated potassium excretion via angiotensin receptor blockade and mineralocorticoid receptor antagonism.
What to do
Check serum potassium and creatinine at baseline, within the first week or so, and periodically thereafter. Avoid potassium supplements and reduce or stop one agent if potassium rises above the acceptable range.
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 Telmisartan-amlodipine
- Aliskiren + Telmisartan-amlodipine Contraindicated
- Sparsentan + Telmisartan-amlodipine Contraindicated
- Amifostine + Telmisartan-amlodipine Major
- Amiloride + Telmisartan-amlodipine Major
- Benazepril + Telmisartan-amlodipine Major
- Candesartan + Telmisartan-amlodipine Major
Other interactions of Spironolactone
- Amiloride + Spironolactone Contraindicated
- Eplerenone + Spironolactone Contraindicated
- Spironolactone + Triamterene Contraindicated
- Abiraterone + Spironolactone Major
- Aceclofenac + Spironolactone Major
- Acemetacin + Spironolactone Major
Frequently asked questions
Can I take Spironolactone with Telmisartan-amlodipine?
MediHelp rates the interaction as major. Spironolactone and Telmisartan-amlodipine 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. Telmisartan and spironolactone both reduce potassium excretion, so combining them can cause clinically significant hyperkalemia. The risk is greatest in renal impairment, diabetes, older age or with potassium supplements.
How serious is the interaction between Spironolactone and Telmisartan-amlodipine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check serum potassium and creatinine at baseline, within the first week or so, and periodically thereafter. Avoid potassium supplements and reduce or stop one agent if potassium rises above the acceptable range.
What other medicines interact with Telmisartan-amlodipine?
MediHelp also lists interactions of Telmisartan-amlodipine with, for example, Aliskiren, Sparsentan, Amifostine. The full list is on the Telmisartan-amlodipine page.
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