I am a 40 year old male. I am in perfect health (per my Dr after check up). Ideal weight. Don't smoke or drink, never have. Low fat, high vegetable and grain diet. Exercise regularly. I have no symptoms or complaints of any illness or injury. I never even get heart burn. Have a normal and healthy sex life (married hetero monogamous). Out of the blue ( no pain or injury ) I started to notice blood in my semen. I have read several site including this one who say that it is usually harmless but that it should still be checked out. After having the problem for about a month, I went to my Dr. and all tests ( PSA, blood test, urine test, physical exam of prostate) all came back as normal. I was sent to a urologist who gave me a questionnaire to fill out for BPH, which showed me to be negative for all symptoms but one ( getting up once during the night to urinate (I drink a cup of tea before bed)) I told him all about my blood in the semen problem and he said it was nothing to worry about, probably a broken blood vessel or something. Then, even though the BPH questionnaire showed me to be nowhere near having it, the urologist wrote me a prescription for Finasteride. I have searched all over the web and several medical and medication reference books at the library and can find not a single place where it says that Finasteride has anything to do with the problem of blood in the semen. All I have read points to Finasteride lessening the symptoms of BPH, symptoms I do not have. Is blood in the semen one of the symptoms of BPH? Finasteride also seems to have some side effects that I don't need or want. If the medication will help, I will just deal with the side effects to be rid of the problem, but I have my doubts. So, on to my question. Have you ever heard of Finasteride helping fix the blood in the semen problem or should I go back to my Dr, and request more tests to determine what the real cause is. I am writing this on Feb 15 08. The problem started in Nov 07. I still have no pain or other symptoms.