I mean I have used Beet powder, citrulline, pycogenol and Dostinex to get incredible erections...like a schoolboy. Also, using the peptide Melanotan II is incredible. It is used for tanning...but one of the nice side effects is raging erections. You get a STRETCH and YAWN reflex using it. I was sitting in class and all the sudden I had this desire to stretch and it felt so good. Additionally...you get boners..LOL