benign prostatic hyperplasia
"This drug medicine works well for me. I am 57 and have used it for about two years. The worst symptom is as listed in the Professional Section on this website:
 Abnormal ejaculation includes ejaculation failure, ejaculation disorder, retrograde ejaculation and ejaculation decrease. In controlled studies, abnormal ejaculation was associated with the use of tamsulosin and was dose-related. 

Though there is no change in the pleasure, this side-effect is annoying. "