What do you think about NO products for folks taking great amounts of anti-oxidants ?
Someone would have to prove that the limiting step in NO synthesis after overcoming natural countermeasures is lack of arginine. Following that, someone would have to prove NO has some kind of positive effect on bodybuilding.
For what its worth I can't think of a way that the first would happen to anyone eating a decent diet. And since there is a natural physiological hyperemia that coincides w/increased transport of nutrients into skeletal muscle already associated with periods during and after exercise I can't see how the second could be all that true either, although if someone has something revolutionary to say I'd listen.
Personally I'd spend my money on creatine monohydrate and then HMB. Building a great body is difficult to do. I think people HOPE there is an easy fix but there isn't. About 75% diet, 24% what you do in the gym, and 1% supplements. Maybe a larger percent diet...