Tadalafil
"Works great.  You still need to get aroused for it to work, but that seems much easier as well.  The first time I took it I had to wait 3 hours for the effect, so don't panic if it doesn't work after an hour.  It was definitely worth the wait. I was afraid it wouldn't work for me at first.  Put it out of my mind, and three hours later....POW.  Just try to relax and enjoy."