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2 of 2 people found the following review helpfulNovember 29, 2013Reviewer: Jason in New York* Jacked went from being great to complete garbage don't wast your money this new formula sucks give me back the old one.
5 of 5 people found the following review helpfulOctober 21, 2013Reviewer: justin in Montana* First off, I used the old formula for approx 2 years. I used it according to the directions. Had amazing energy and never built up a tolerance to it. I got a tub of the advanced formula recently. The first time using it I took it the same way as always, at home before going to the gym. Usually I feel it start kicking in when I get to the gym. Nothing. By the time I change clothes and go to the bathroom I can usually definitely feel it flowing in my body. No energy, but a little nausea. By the end of the workout I had no energy at all and was feeling very nauseous. The next four hours I felt like I was going to throw up. I took it again three days later with the same results .. absolutely no energy and very nauseous. I also noticed there must be quite a bit more beta-alanine in the new formula. I tingled quite a bit more than normal and it bordered on the line of painful. Looks like I'm looking for a new pre workout supplement. Very dissappointed. I wouldn't recommend this to anyone.