I have weak erections... I always lose my erection before sex... how can I get harder erections naturally?

either you are very nervous or anxious about the sex and that makes you go limp, or you aren't attracted to the person you want to have sex with. also consider the possibility that you are gay and maybe cant force yourself to be attracted to the opposite sex. anyway, chill, its just sex. and about the erections, there are a few ayurvedic herbs and medicines, but i doubt they work. very few natural remedies that are proven to work for such cases. maybe you should try fantasizing or foreplay to make your hard-on last longer...