What causes lack of feeling while ejaculating and less semen?
Patient: hi my name is mark, I have been taking pasvax xl 400 for the last month or so. I have noticed over the last two weeks that when i ejaculate that i dont have the normal intense feeling. Also i dont seen to produce as much semen. Today  during penetration i had a discomfort, almost as if i had ejaculated and was trying to have sex straight away. I waited five minutes for this to pass and then had intercourse and ejaculated same as above. Could this be related to this medication. Am very worried. Doctor: Hi,  Most of the medication taken for prostate hyperplasia can cause erection issue but Pamsvax XL 400 (tamsulosin hydrochloride) has very little effect on erection.  Still, if your issue persists need to talk to your urologist for change of medication.  Hope I have answered your query. Let me know if I can assist you further.  Regards, Dr. S.R.Raveendran, Sexologist