I want to start off by saying that no2 and nox2 were the best supplements I ever took. I went through 2 bottles of no2 then I switched to the cheaper nox2 with excellent results. I gained about 7 lbs in 3 weeks and fealt phenominal pumps while working out! I fealt like my skin was going to ripp! I looked completly different in the gym with my pumps. I couldn't believe my eyes and everyone thought that I was juicing. But the problem is the pumps are not perpetual. they go away an hour or two after the workout. But they do motivate me to lift much harder so that I can look like that. I have discontinued nox2 to sea if v12 will work on its own. I have been on v12 for 2 weaks with absolutly no gains! Nothing. I just started back on nox2. Sorry for the long post, I just wanted to share my experience. I will finish the bottle of v12 because mabey I didn't give it enough time. Anybody have simular exp. with v12/no2/nox2? what other supps worked for you?