Cellucor C4 Carbonated Energy RTD Carbonated Energy RTD by Cellucor C4 contains 0% sugar, 0% calories, 0% total carbs, but 100% energy to fuel for your workout! This mouth-watering sparkling drink is packed with clinically studied, premium ingredients to boost your performance, enhance muscular endurance, and improve mental focus. Its explosive performance energy blend contains ingredients such as caffeine, citrulline and beta-alanine to boost your energy levels. 150mg of caffeine. Zero sugar. Reduces fatigue and increases endurance. Supports mental and cognitive focus during workouts. Caffeine anhydrous in Cellucor C4 Carbonated Energy RTD is a purer and more effective version than normal caffeine. It has been shown to improve muscle strength and endurance, without increasing how tough the activity feels. Furthermore, it is widening blood vessels, which increases blood flow to your muscles. Citrulline is a non-essential amino acid that has great antioxidant effects. In addition to that, it enhances physical exercise, improves athletic performance and lowers blood pressure. Each can contains beta-alanine which helps increase your time to exhaustion during workouts, improves endurance and boosts performance in high-intensity exercises. Cellucor C4 Carbonated Energy RTD is more than just an energy drink – see for yourself! Nutritional Information Directions of Use Consume 1 can 20-30 minutes prior to exercise, or when you need an energy hit. Do not consume more than 1 can per day. Do not consume within a few hours of bedtime.