Sorry son we can't tell you the name of any medicine and thus no medicine is used healthy without doctor’s advice. And are you sure, you are not under any kind of stress/tension? Please understand that it’s necessary to be stress-free to have sex or erection of penis. Read about this here:https://lovematters.in/en/news/4-signs-you-have-erectile-dysfunction https://lovematters.in/en/news/erection-trouble-where-turn If you would like to join in on a further discussion on this topic, join our discussion board, "Just Ask” https://lovematters.in/en/forum