Tadalafil improves lower urinary tract symptoms (LUTS) including nocturia. However, the effect of tadalafil on the nocturia-related quality of life (QoL) is still unknown.
The effects of tadalafil on nocturia and nocturia-related QoL were evaluated prospectively in patients with benign prostatic hyperplasia (BPH) as a multicenter study.
Eligible men were ≥40 years with nocturia ≥2 and a prostate volume ≥20 mL. Patients were asked to complete a self-report questionnaire on the International Prostate Symptom Score (IPSS), the Nocturia Quality of Life questionnaire (N-QoL) and the International Index of Erectile Function 5 (IIEF5). Urinary frequency volume charts (FVCs) were also evaluated. These measures were evaluated at baseline, and after 4, 8, and 12 weeks of tadalafil administration (5 mg once daily).
Thirty-one patients with a mean age of 74 years, a mean prostate volume of 31 mL, and a mean prostate-specific antigen level of 2.8 ng/mL were included. Treatment with tadalafil significantly improved their nocturia after 4 weeks, and these improvements were maintained for the 12-week treatment period. Total N-QoL score in new patients and several N-QoL items (inadequate sleep at night and overall bother) in all patients improved significantly after tadalafil treatment. FVCs revealed a significant improvement in the number of hours of undisturbed sleep (HUS) after treatment with tadalafil. No serious adverse events were observed.
This study indicates that tadalafil 5 mg once daily improves nocturia, nocturia-related QoL, and HUS in BPH patients with nocturia. These results suggest that tadalafil can offer a clinically meaningful treatment option for BPH patients with nocturia.
Urologia internationalis. 2020 Jun 02 [Epub ahead of print]
Ryosuke Takahashi, Yasuhiro Sumino, Minoru Miyazato, Hisae Nishii, Takuma Oshiro, Hiromitsu Mimata, Seiichi Saito, Masaki Yoshida, Masatoshi Eto
Department of Urology, Spinal Injuries Center, Iizuka, Japan, ., Department of Urology, National Hospital Organization Oita Medical Center, Oita, Japan., Department of Systems Physiology, Graduate School of Medicine, University of the Ryukyus, Nishihara, Japan., Department of Urology, National Center for Geriatrics and Gerontology, Obu, Japan., Department of Urology, Graduate School of Medicine, University of the Ryukyus, Nishihara, Japan., Department of Urology, Oita University Faculty of Medicine, Oita, Japan., Department of Urology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.