Comparative efficacy and safety of silodosin and tadalafil combination or monotherapy for treating lower urinary tract symptoms due to benign prostatic obstruction: A systematic review and meta-analysis

Introduction: Over the last few years, trends in managing benign prostatic hyperplasia (BPH) have improved, advancing from reliance on surgery to satisfactory medical therapies. However, the efficacy and safety of combination therapies, including silodosin and tadalafil, are not well established compared to monotherapy for treating lower urinary tract symptoms (LUTS) due to benign prostatic obstruction (BPO). Material and methods: A systematic search was conducted in PubMed, ScienceDirect, Cochrane Library, and Scopus up to April 1, 2024. The quality of the studies was assessed using The Cochrane Risk of Bias (RoB) Tools 2 and Risk of Bias in Non-randomized Studies of Exposures (ROBINS-E). Meta-analysis was conducted using RevMan 5.4. Results: (p = 0.006) and PVR (p = 0.02) over tadalafil but with higher rates of total AE, discontinuation, and risk of retrograde ejaculation. Conclusions: Silodosin and tadalafil are effective for treating LUTS in men due to BPO, especially when used in combination. However, with concerns about safety, tadalafil as monotherapy offers an advantage for patients with fertility desires due to its favorable side effect profile.