I'm a 35 yr. old male. I've never been able to get an erection with light foreplay, kissing or anything. I always have to be physically stimulated to gain an erection. When having sex, I will often go down, and it takes restimulation to continue. Sometimes this happens 4-5 times, and usually by then both of us are completely frustrated. I have no problem masturbating, and when I blacked out on whiskey my g/f said I was erect even after sex until the next morning. If I've taken a vikodin or xanax, this problem is not as prevelant, which leads me to believe that this is mental, not physical. I know I am heterosexual so that is not the issue. I smoke regularly, and drink occasionally. My g/f is completely frustrated, as am I. I'm currently taking 1000mg of niacin a day as of yesterday, experiencing the flushing effects, and trying to get more blood circulating. If there is a solution, an herbal remedy, or anything that might help, I'd be very appreciative. I can't go on like this. It's too embarassing, frustrating, and the will to keep trying is fleeting.