Hey guys I'm sure there are several threads out there which mention taking L-Citrulline daily for better erection quality and what-not. I was taking the supplement not long ago and I experienced much more FREQUENT/HARDER erections. So in my personal case, L-Citrulline worked very well. I took the capsule form, and however many capsules the bottle suggested is what I took. I was waking up with raging boners in the middle of the night, and that usually never happens to me. I have stopped taking L-Citrulline only because I ran out. I will be purchasing more soon, unless I decide to wait for the DLD Super Pill to come out. Maybe this bit of information will help some of you. Good luck fellas.