Drug interactions
Candesartan + Captopril
Severity: Major
Candesartan and Captopril: 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
Dual renin-angiotensin system blockade with an ACE inhibitor and an ARB increases hypotension, hyperkalemia and renal impairment. Benefit over monotherapy is limited outside specific heart failure situations.
What this interaction means in plain words
Candesartan and Captopril 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.
Candesartan belongs to Cardiovascular; Captopril belongs to Cardiovascular.
Why it happens
Additive blockade of the renin-angiotensin-aldosterone system at two levels.
What to do
Avoid routine combination. If deliberately used, check potassium and creatinine at baseline and soon after changes.
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 Captopril
- Aliskiren + Captopril Contraindicated
- Captopril + Sacubitril / valsartan Contraindicated
- Captopril + Sacubitril-valsartan Contraindicated
- Amifostine + Captopril Major
- Amiloride + Captopril Major
- Amlodipine-hydrochlorothiazide-valsartan + Captopril Major
Other interactions of Candesartan
- Aliskiren + Candesartan Contraindicated
- Candesartan + Sparsentan Contraindicated
- Amifostine + Candesartan Major
- Amiloride + Candesartan Major
- Amlodipine-benazepril + Candesartan Major
- Amlodipine-hydrochlorothiazide-valsartan + Candesartan Major
Frequently asked questions
Can I take Candesartan with Captopril?
MediHelp rates the interaction as major. Candesartan and Captopril 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. Dual renin-angiotensin system blockade with an ACE inhibitor and an ARB increases hypotension, hyperkalemia and renal impairment. Benefit over monotherapy is limited outside specific heart failure situations.
How serious is the interaction between Candesartan and Captopril?
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 routine combination. If deliberately used, check potassium and creatinine at baseline and soon after changes.
What other medicines interact with Captopril?
MediHelp also lists interactions of Captopril with, for example, Aliskiren, Sacubitril / valsartan, Sacubitril-valsartan. The full list is on the Captopril page.
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