I dont take anything. Well organic protein powder is a supplement, that and a caffiene pill prior to work out, but thats it. What you see is the product of hard work and nutrition.
Years ago, I used to take noxplode or superpump prior to workout. I stopped because even though I would cycle it, it wasnt giving me the kick it did in the beginning. Theres also stimulants that would keep me up at night if I took it around 4pm or later. Add to that the fact that whatever is in it isnt monitored by the fda and I got concerned about what I was taking.
I would consider taking them again a couple months out of the year for plateau busting.