erectile dysfunction
"I'm 35. Had trouble sometimes when I was having sex with a new partner.  Spoke to my doctor, who said it probably not physical and to be more communicative to be more relaxed.  Found someone's Viagra pills they left behind, and decided to try one.  Problem solved, and no side effects.  Went back to MD, and was given Levitra (because it's in the formulary) and it works great too.  I take half a 20 mg pill."