Figure 54

Figure 54 Incidence of patients reporting difficulty in either obtaining or maintaining an erection in a 4-year comparative study of
representatives from five classes of antihypertensive agents. Patients treated with either a β-blocker or a diuretic experienced the highest
incidence of erectile dysfunction whereas those receiving the α-blocker doxazosin reported less erectile dysfunction than those receiving
placebo, suggesting a mild beneficial effect with this agent (Neaton et al., 1993; TOMHS Research Group, 1996)