Silodosin: a review of its use in the treatment of the signs and symptoms of benign prostatic hyperplasia.

Silodosin is a highly selective α1A-adrenoceptor antagonist indicated for the treatment of the signs and symptoms of benign prostatic hyperplasia (BPH). Oral silodosin had a rapid onset of effect in men with lower urinary tract symptoms (LUTS) associated with BPH, with improvements seen in voiding and storage symptoms, maximum urinary flow rate and health-related quality of life in well-designed, 12-week trials. Silodosin was noninferior to tamsulosin in terms of improving LUTS associated with BPH. The efficacy of silodosin was maintained in 9-month extension studies and was also seen in a phase IV study conducted in a real-world setting. Silodosin was generally well tolerated and was associated with a low risk of orthostatic hypotension. Abnormal ejaculation was the most commonly reported adverse event, although few patients discontinued treatment with silodosin because of this adverse event. In conclusion, silodosin is a useful option for the treatment of LUTS associated with BPH.