Cytosport Performance Nutrition System. Caffeinated Pre-Workout Supplement Mix. Gluten and Soy Free. Superior Performance and Recovery. Cytopsport Fast Twitch Caffeinated Pre-Workout Supplement Mix Is Formulated With Caffeine to Drive Workout Intensity and Beta-Alanine to Help Support Powerful Muscle Pumps for Maximum Performance during Your Workout. Training Is Trauma. Per Serving: 3.5g L-Citrulline, 3g Betaine, 2g Carnosyn Beta-Alanine. Excellent Source of Vitamin B6, B12, Folate Acid and Vitamin C. 200mg Caffeine per Serving.