Suggest Treatment For Erectile Disfynction

I am 19 years old and am having erection problems is it okay to take viagora once to regain confidence I also workout and take protein supplements can that be a cause of the erection problem and can I take viagora 100 while my body is on protein supplements? Can I use japani oil at this age will it be harmful in the future?also I bought vigora which is a red pill which has hundred engraved on it I bit it and took quarter of it and it did not have any effect was it fake is it bad I took it .. Also the tablet had colour coming off of it was it expired ? Please answer as I am concerned sir please .. Am healthy , have a good diet and don t engage in smoking and drinking much