To date, this is our most potent PRE-WORKOUT. With 24g of components per serving, 10X STIM will help you get the most out of your workouts. We recommend starting slowly and testing your tolerance with 450mg of caffeine per serving. Advanced trainers and ‘Stim Junkies’ will enjoy this. STIM 10X is not for the faint of heart. With 24g of ingredients per scoop, 10X STIM is filled with science-backed components to help you get the most out of your workout.