Erectile dysfunction . Mid 40s. Using 50mg Viagra . Sometimes I seem to take too much Viagra and am completely limp. Typical problem like last night though, hard as a rock on the couch with my girl. She s touching etc. When we go upstairs to make love, I lose erection . She takes is VERY VERY badly, so I am terrified to lose it, but I do lose it when I get to bed. sometimes, I get it back, but she is still upset. How do I deal with this?