just tell your doc you've been having probs with your libido and erectile function. he'll give you tests to check testosterone levels and if they are low and they should be if he's a decent doc he should prescribe you some testosterone, plus give you a survey to fill out which is like 10 questions about your erectile function just answer them indicating you are having problems and he will prescribe viagra for you; they hand that shit out like candy, you just gota ask for it. if he's smart doc then he will prescribe 100mg viagra bc 50mg cost same as 100mg so it's better value to you. you drop a 100mg and knock the bottom out of that pussy!