benign prostatic hyperplasia
"40 yrs old. Had testicular cancer at 30, left testi removed. About 2 years after I started having pain in between my scotum and rectum. Was diagnosed with prostatitis , doc put me on rapaflo. Said it could take up to 3 weeks for it to start to work. First thing I noticed with in 24 hrs was retrograde ejaculation.. Vary concerning at first then I read into side effects.. (Thanks doc for not giving any heads up). It took me about 3 days befor my pain was lessened..and about 2 weeks befor it was almost gone. Now I can get away without taking it for 3-5 days befor I start getting sore...but it's a catch 22 since the timing for me to have a normal ejaculation is about 3-4 days off the meds.

3-4 days of use is not enough time for it to work prop."