C4 Ultimate Energy is no-holds barred, formulated with Caffeine, TeaCrine and Dynamine for a tri-stim energy experience, and packed with 300mg of caffeine, with zero sugar or artificial dyes. C4 Ultimate Energy comes in Arctic Snow Cone, Fruit Punch, and Orange Cream flavors, as well as collaborative flavors with the WWE (Berry Powerbomb & Ruthless Raspberry) and Wounded Warrior Project (Freedom Ice).