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Captopril is used in the treatment of high blood pressure, heart failure, kidney disease in patients with type I diabetes, and in patients who recently suffered a heart attack.

How it works

Captopril belongs to the group of medicines called Angiotensin Converting Enzyme (ACE) Inhibitors. Captopril works by widening the blood vessels, thereby making it easier for the blood to flow through them.

Common side effects

Acne-like rash, Allergic reaction, Hives, Chest pain, Cough, Dizziness, Altered taste, Difficulty in swalloing, Shortness of breath, Facial swelling, Lip swelling, Fainting, Fatigue, Hoarseness of voice, Lightheadedness, Mouth ulcer, Sore throat, Stomach pain, Tachycardia, Chills, Nausea, Fever


Expert advice

  • Captopril can cause dizziness, therefore avoid driving or using machinery.
  • Avoid getting up too fast from a sitting or lying position.
  • Drink plenty of water while taking this medication.
  • Consult your doctor if you are undergoing any surgery.

Frequently asked questions


Q. Is captopril a controlled substance/betablocker/an ACE inhibitor?
Captopril belongs to a class of medication called as angiotensin converting enzyme (ACE) inhibitor. It is not a controlled substance or betablocker.
Q. Does captopril contain sulfa?
No, it does not contain sulfa.
Q. Does captopril interact with anesthesia?
No it is not known to interact with anesthesia.
Q. Does captopril lower heart rate?
Captopril lowers blood pressure and it does not lower the heart rate. However, increase in potassium levels due to captopril treatment (a known side effect) can cause lowering of heart rate.

Content on this page was last updated on 30 September, 2016, by Dr. Varun Gupta (MD Pharmacology)