I actually really liked the stuff... I used to superdose the chewables cuz i liked chewing em in my car on the way to the gym and would go through like 8 of em. you can realllllly feel the beta-alanine kick in which kind of weird if you're not used to it. I thought i was having a stroke the first time i took it. Your skin tingles and feels like you have pins and needles all over your body. Anyways, i got good pumps and a good fullness from it. I think NO products are a waste of time in general, but this one i would use in the future if i got a good price on it- HTTC