I'VE BEEN HAVING THIS PROBLEM FOR ABOUT 1 1/2 YRS. NOW. I MASTURBATE ALOT BECAUSE WHEN I HAVE SEX WITH MY WIFE, I LOOSE MY ERECTION. EVEN WITH MASTURBATION I TEND TO ONLY GET PARTLY ERECT IF I'M ABLE TO ACHIEVE THAT. THIS IS MAKING IT DIFFICULT TO ACHIEVE ORGASM/EJACTULATE AT ALL. MY FATHER HAS THE SAME PROBLEM. COULD THIS BE INHERITABLE? I AM 46 YRS. OLD AND MY DAD AND UROLOGIST THINKS THIS IS BECAUSE OF THE MEDICATIONS I'M ON AS FOLLOWS: 1) IBUPROFEN 800MG. 2X DAY, 2) PERPHENAZINE 4MG. 2X DAY, 3) BENZTROPINE 2MG. 2X DAY, 4) MONTELUKAST 10MG. 1X DAY, 5) VALACYCLOVIR 500MG 2X DAY, 6) ZIPRASIDONE 80MG. 2X DAY, 7) BUSPIRONE 15MG. 2X DAY, 8) METOPROLOL 25MG. 2X DAY, 9) THEOPHYLLINE 300MG. 2X DAY, 10) METOCLOPRAMIDE 5MG. 4X DAY, 11) LEVETIRACETAM 1,000MG. 3X DAY, 12) DIVALPROEXE 1,000MG. 3X DAY, 13) VIMPAT 100MG. 2X DAY, 14) ZONISAMIDE 100MG. 3BEDTIME, 15) LANSOPRAZOLE 30MG. 2X DAY, 16) SUCRALFATE 1GM. 3X DAY, 17) COLESTIPOL 1GM. 3X DAY. I'VE TRIED VIAGRA BEFORE WITH NO RESULTS. I WAS ON WELLBUTRIN BEFORE ZIPRASIDONE. AT THAT TIME WHEN I HAD AN ORGASM I DIDN'T EJACTULATE ALTHOUGH NOW WHEN I AM ABLE TO ACHIEVE ORGASM I'VE GOT LITTLE EJACTULATION AT TIMES. I'VE GOT AN APPOINTMENT ON 4/30/14 WITH MY UROLOGIST AND I PLAN TO DISCUSS THIS WITH HIM THEN. WHAT HAS TO BE DONE TO FIND OUT/RULE OUT IF THESE MEDICATIONS ARE CAUSING THE PROBLEM.