 [ Symptoms ] my erections have shrunk by 50 in everyway over the past two years what might be causing this  when i have an erection sometimes i am unable to ejaculate there is still plenty of pre ejaculatory fluid i am on several medications two for high blood pressure synthroid a statin anti depressant anti anxiety stool softeners these drugs all do there job well for each condition they are designed to treat i have been a fairly large consumer of alcohol in the past but have cut down considerablly on this recently i also have two spermatocysts connected to my left testicle [ Disease ] that is something that cannot be determined 100 via the internet since there is no way to blindly ascertain the extent of the injury remember that the penis does not make sperm the testicles make sperm if you are concerned he would need to be examined by a medical professional or urologist it would not be prudent to make a guess over the internet i am sorry