Fast Twitch is a pre-workout supplement that is backed by science with 200mg of Caffeine to ignite power and athletic performance. Our zero-sugar formula is for athletes and also includes Beta-Alanine, Betaine, L-Citruline and B-Vitamins. DETAILS: 200mg caffeine 2g Beta-Alanine Zero sugar and an excellent source of Vitamins B6 & B12