Abstract

Data from clinical trials with benazepril suggest that the safety profile of benazepril is similar to that of other angiotensin-converting enzyme (ACE) inhibitors. Treatment-related side effects occurred in 20% of benazepril-treated patients and in 18% of patients receiving placebo. The most commonly reported side effects with benazepril were headache, dizziness, and fatigue. The incidence of side effects was not affected by the degree of hypertension, age, gender, race, dosage, or the degree of renal impairment. Side effects believed to be related to the pharmacologic action of ACE inhibitors as a class include symptomatic hypotension, which occurred at a relatively low rate with benazepril, and hyperkalemia and elevation of serum creatinine, which occurred to the same extent with benazepril as has been noted with other ACE inhibitors. The mechanism of cough as an ACE inhibitor side effect is unknown; the incidence was similar to that with other ACE inhibitors. Rash and taste disturbance have occurred rarely with benazepril. The incidence of neutropenia and of proteinuria was the same in both the benazepril and placebo groups. Renal failure in hypertensive patients treated with benazepril has not been reported. Overall, benazepril is generally well tolerated by hypertensive patients. The incidence of most side effects is comparable to that with other ACE inhibitors and placebo.