I'm sure most of you know what this is and have heard the claims. This is another one of Ed Byrd's (the guy who brought us creatine) baby's. So, I have spend hundreds on different "nitric oxide" boosting supps. I actually used Ed Byrds N02 before running any cycles. I believe I benefited from it at the time. I got decent pumps and it felt almost perpetual. It is basically a hemodilator. It dialates the blood vessels which increase bloop flow throught the body (muscles) which also increases oxygen levels in the blood. It is supposed to promote protein synthesis and carry vitamins and minerals to the muscles where they're needed. My question is, does anyone use Arginine while running a cycle? If the claims are true, I imagine this would benefit AAS users immensely! I know there is a lot of debate about this, as with most supps. It's been a long time since i've used N02 and if I remember correctly, I really thought it worked well. Placebo effect? Any truth to the claims? The only supps I spend money on these days are proteins & vitamins. Should I be looking into supps to maximize gains on cycle?