Sir I do have a sex desire but when I go to bed with my partner, either I ejaculate while foreplay or without intercourse. Many times I do not get the proper erection means I am not able to do intercourse until I take the viagra tablet. But when I took it either I feel acidity or I vomit, in the end I do not enjoy the moment for which I took the viagra. I have consulted 3-4 doctors but still result is zero. I have taken so many medicines like vigomax, vigorax and some more ayurvadic treatment.