Going too crazy on the "supplements" wasn't a good idea for me. My body could only handle the weights I could do at 132 (when I was younger and my most competitive weight) and at 148. So going up another weight class taking, err... vitamins, wasn't functional for me. I'd just get hurt and would gain anything competively. It was a pretty crazy training environment and training cycle. But then again...... so is wrestling.
Bodybuilders are the true human body chemists of sports. I tried that for awhile and got out of all of that rather quickly. I didn't really have the body type, and the stuff those guys do. Man!