i was 20 years old with no sexual problems and a buddy of mine had me try stamina rx. i was able to have sex for 2 hrs straight and thought i would a good idea to keep using it. i used 1 pill a day for 5 days and after that i couldn't get an erection. its been 2 years and i still have this problem. i tried turned on goat weed at high doses and it worked for 1 day and got no results after that day except headaches ..if i look at porn i might be able to opull off half an erection but not enough to penetrate...... any help PLEASE