I found that it wasnt much good until I stacked it with creatine. then it worked like a charm. I gained an extra 2 lbs and my muscles felt fuller and more pumped at rest. The problem is the price. I have often wondered if plain old arginine would do the same. After all arginnine is known to help with erections a la viagra. NO2 is just arginine ketoglutarte. or more plainly arginine coupled with glutamine. anyway, of anybody wants to try it, let me know. right now I am cuttin and so it will be a while before i try it.

hope this helps.