Captopril belongs to a class of medicines called angiotensin-converting enzyme inhibitors, or ACE inhibitors. It is prescribed for a number of different reasons. You may have been prescribed it to reduce high blood pressure (hypertension), or to treat heart failure, or to protect your heart and blood vessels from further damage following a heart attack, or to protect your kidneys if you have diabetes. Your doctor will tell you why it has been prescribed for you.
This is a companion discussion topic for the original article at https://patient.info/medicine/captopril-an-ace-inhibitor