About this item C4 PRE WORKOUT POWDER FOR MEN & WOMEN - America's Number 1 Selling Pre-Workout Brand has been trusted since 2011 with over 2 billion servings sold* For advanced energy support, endurance, force, and pumps BUILD MUSCLE & STRENGTH - Formulated with a super creatine compound to support strength and performance INCREASE REP COUNT - Formulated with CarnoSyn Beta-Alanine, a premium clinically studied beta-alanine, which has been studied to support muscular endurance and fight fatigue MORE CAFFEINE, PLEASE - Formulated with a patented and clinically studied compound that may help the body prolong its caffeine tolerance buildup DELICIOUS FLAVORS UNLIKE ANYTHING ON THE MARKET - Cherry Limeade, Fruit Punch, Icy Blue Razz, Orange Burst, Strawberry Margarita, Juicy Candy Burst, Watermelon, and Pink Lemonade