I have always been leary of what a supplement says and what he does in reality ,so i use them cautiosly and almost think they do not work before using them....i have gotten NO2 for $50 to se what happened...i liked the feeling it gave me.I got that pump they were talking about and my workouts were more intense.The pump at times was so painful and full that i had to end my sets 3/4 the way through...IMO they worked,...
I never got much off of creatine for the record.I have found the basic's qork best for me..good luck and shop around till you find NO2 for alot less..GNC is a scam when it comes to prices and that is a shame cause they sell alot of good things....