qnt pre workout overdrive sweet lemonade 390gr 4000 mg beta-alanine per serving 200 mg caffeine per serving 1000 mg creatine monohydrate per serving 1000 mg citrulline, l-arginine and taurine per serving Beta-alanine in Metapure Overdrive Pre-Workout plays a crucial role in the production of carnosine. This dipeptide helps regulate lactic acid during exercise, especially during short, intense bouts of exertion. The more lactic acid there is in the muscles, the more muscle fatigue is created.