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Alpha-blocker therapy for benign prostatic hyperplasia: a comparative review
Associate Professor of Surgery (Urology), University of British Columbia, Vancou
Jun 1998 (Vol. 5, Issue 2, Pages( 551 - 557)

Abstract

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  • In the past decade there has been a shift in the primary approach to therapy for BPH, from surgical intervention to pharmacotherapy. Therapies with α-blockers, particularly long-acting selective α1-adrenoreceptor antagonists, has proven effective, and hence has become a popular treatment option. In randomized controlled trials, 3 α-adrenoreceptor antagonists -terazosin, doxazosin, and tamsulosin -have been shown to significantly improve both the mean peak urinary flow and the severity of BPH-related symptoms. There are no currently published trials comparing the clinical efficacy of these drugs. Reports from non-comparative trials suggest that the effects on symptoms and flow rates are similar. However, side effects, such as postural hypotension, asthenia, and dizziness may be less with tamsulosin. Use of tamsulosin is associated with loss of ejaculation in 4.5% of men. Until differences in efficacy are demonstrated, the choice of α-blocker will depend on tolerance for side effects and convenience of administration.

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