<unk> , sold under the brand name<unk> oten among others, is an angiotensin-converting enzyme (ACE) inhibitor used for the treatment of hypertension and some types of congestive heart failure.<unk>  was the first oral ACE inhibitor found for the treatment of hypertension. Unlike beta-blockers, another class of drugs used to treat angina and hypertension,<unk>  does not generally impair intellectual or sexual functions. It also does not cause fatigue as associated with beta-blockers. Due to the adverse drug event of causing hyperkalemia, as seen with most ACE Inhibitors, the medication is usually paired with a diuretic.<unk>  was patented in 1976 and approved for medical use in 1980.
Captopril
Furosemide
Chlorothiazide
Hydralazine
Cyclothiazide
Nebivolol
Digoxin
Lisinopril