A fixed dose combination of tamsulosin and tadalafil in men with benign prostatic hyperplasia and erectile dysfunction: a prospective, multicenter, phase IV study
Abstract
PURPOSE: To evaluate the safety and efficacy of a fixed-dose combination (FDC) of tamsulosin prolonged release (PR) and tadalafil in moderate-severe benign prostatic hyperplasia (BPH) and erectile dysfunction (ED). METHODS: This was a single-arm, phase IV, prospective clinical trial in sexually active men aged 45–75 years with BPH [International Prostate Symptom Score (IPSS) score ≥ 8] and ED [International Index of Erectile Function-Erectile Function (IIEF-EF) score ≤ 25] who were taking tamsulosin 0.4 mg PR and tadalafil 5 mg. Eligible patients received FDC of tamsulosin+tadalafil (0.4 + 5 mg) capsules for 12 weeks. The endpoints included treatment-emergent adverse events (TEAEs), total IPSS, IPSS storage and voiding sub-scores, maximum urinary flow rate (Qmax), post-void residual (PVR) volume, IIEF-EF (questions 1–5 and 15) score, and IPSS quality of life (QoL) index. RESULTS: A total of 172 were enrolled. Overall, 12 TEAEs were reported in 10 (5.81%) patients. None of the TEAEs were severe, serious, life-threatening, or required treatment interruption. A statistically significant improvement (p < 0.0001) in total IPSS after 4, 8, and 12 weeks was observed. Similar improvements from baseline were also observed in IPSS storage and voiding sub-scores, IPSS QoL, Qmax, PVR volume, and IIEF-EF (questions 1–5 and 15) score (p < 0.05 for each parameter). The proportion of men with normal erectile function significantly increased at week 12 (p = 0.0003). CONCLUSION: The FDC of…
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