Udenafil(DA8159) is a PDE5 inhibitor used in urology to treat erectile dysfunction.Target: PDE5Udenafil is an oral PDE5 inhibitor. Udenafil significantly increased cAMP and cGMP levels and were more highly distributed in the prostate than plasma. The T/P ratio of udenafil was higher than tadalafil. These findings may help in the assessment of the feasibility of using PDE5 Is to concurrently treat both LUTS and erectile dysfunction [1]. After 12 weeks of treatment, the patients treated with udenafil showed significantly greater change from baseline in the IIEF-EF domain score compared with placebo (placebo, 0.20; 100-mg udenafil, 7.52; and 200-mg udenafil, 9.93, respectively) (P < 0.0001). udenafil significantly enhanced the rates of successful penetration (SEP Q2) and maintenance of erection (SEP Q3) (P < 0.0001) [2].
References:
[1]. Zhao, C., et al., Activity of phosphodiesterase type 5 inhibitors in patients with lower urinary tract symptoms due to benign prostatic hyperplasia. BJU Int, 2011. 107(12): p. 1943-7.
[2]. Paick, J.S., et al., The efficacy and safety of udenafil, a new selective phosphodiesterase type 5 inhibitor, in patients with erectile dysfunction. J Sex Med, 2008. 5(4): p. 946-53.