Captopril Warnings & Precautions

Before taking Captopril, inform your doctor of all your medical conditions and medications. Certain conditions and patient groups require special precautions or may make Captopril unsuitable.

Key Warnings

→Contraindicated in pregnancy — can cause fetal renal failure and death
→Bilateral renal artery stenosis is a contraindication
→Stop immediately if angioedema develops
→Monitor renal function and potassium regularly

Pregnancy and Breastfeeding

→ACE inhibitors are absolutely contraindicated in pregnancy, particularly the second and third trimesters, due to fetal nephrotoxicity, oligohydramnios, and death. Discontinue immediately if pregnancy occurs and switch to a pregnancy-safe antihypertensive.

Older Adults

→Increased risk of first-dose hypotension and falls. Start low, titrate slowly. Monitor renal function and potassium closely as kidney function declines with age.

Chronic Conditions

→In renal artery stenosis: high risk of acute kidney injury. In hyperkalemia: avoid or monitor closely. In heart failure: highly beneficial but dose titration requires careful monitoring.

When Not to Use

→Pregnancy
→History of angioedema with any ACE inhibitor or ARB
→Concurrent use of aliskiren in diabetes or CKD

Safety Note

Captopril should only be taken as prescribed. If you have any concerns about whether Captopril is suitable for you, consult your doctor or pharmacist.

Frequently Asked Questions

Is Captopril safe for everyone?

Captopril is not suitable for everyone. Contraindicated in pregnancy — can cause fetal renal failure and death Always inform your doctor of all medical conditions before starting Captopril.

Can I take my ACE inhibitor with potassium supplements?

Caution is needed. ACE inhibitors already raise potassium by reducing aldosterone. Adding potassium supplements can cause dangerous hyperkalaemia. Always discuss with your doctor before taking potassium supplements.

More About Captopril

Dosage & Administration

Side Effects

Drug Interactions

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Medical Disclaimer: This drug reference is provided for informational purposes only and is not a substitute for professional medical advice. Always consult your physician or pharmacist before changing your medication. Information reviewed by the vHospital Editorial Team · Sources: WHO, BNF, FDA prescribing information.