Drug interactions
Quinapril + Telmisartan
Severity: Major
Quinapril and Telmisartan: 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
Combining an angiotensin receptor blocker with an ACE inhibitor produces dual renin-angiotensin system blockade. This raises the risk of hypotension, hyperkalemia and renal impairment without clear added benefit in most patients.
What this interaction means in plain words
Quinapril and Telmisartan 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
Additive pharmacodynamic inhibition of the renin-angiotensin-aldosterone system at two points.
What to do
Avoid the combination where possible. If used under specialist supervision, monitor potassium, creatinine and blood pressure frequently.
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
- Aliskiren + Telmisartan Contraindicated
- Sparsentan + Telmisartan Contraindicated
- Amifostine + Telmisartan Major
- Amiloride + Telmisartan Major
- Amlodipine-benazepril + Telmisartan Major
- Amlodipine-hydrochlorothiazide-valsartan + Telmisartan Major
Frequently asked questions
Can I take Quinapril with Telmisartan?
MediHelp rates the interaction as major. Quinapril and Telmisartan 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. Combining an angiotensin receptor blocker with an ACE inhibitor produces dual renin-angiotensin system blockade. This raises the risk of hypotension, hyperkalemia and renal impairment without clear added benefit in most patients.
How serious is the interaction between Quinapril and Telmisartan?
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 under specialist supervision, monitor potassium, creatinine and blood pressure frequently.
What other medicines interact with Telmisartan?
MediHelp also lists interactions of Telmisartan with, for example, Aliskiren, Sparsentan, Amifostine. The full list is on the Telmisartan page.
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