From the Manufacturer:  THE BEST OF BOTH WORLDS – C4 PERFORMANCE ENERGY® MEETS SWEET CANDY-INSPIRED FLAVORS. With C4 Performance Energy®, you can achieve your maximum speed, power, and performance.  For a burst of energy, each can contains 200 mg of caffeine and CarnoSyn® Beta Alanine.  With its NSF Certified for Sport® designation, clinically researched ingredients, and zero grams of sugar or artificial coloring, C4 Performance Energy® is the athlete's go-to product for performance enhancement. NSF CERTIFIED FOR SPORT®:  Tested & certified for professional and collegiate athletes EXPLOSIVE ENERGY: Use 200 mg of caffeine to boost vitality and performance. Candy-inspired flavor: Savor delicious flavors without feeling guilty because they contain no sugar or carbohydrates. IMPROVE YOUR ENDURANCE:  Carnosyn® Beta-Alanine has been clinically studied to combat fatigue and enhance muscle endurance.  NO SUGAR or synthetic coloring C4 PERFORMANCE ENERGY® INGREDIENTS 200mg CAFFEINE CARNOSYN® BETA-ALANINE — Clinically studied ingredient that fights fatigue and powers muscular endurance. BETAPOWER® — Clinically studied ingredient that supports muscle cell hydration and physical performance. KEY NUTRIENTS — Niacin and Vitamin B12. Warning Do not consume this product if you are pregnant or nursing. Not intended for children. Recommended for adults. Store in a cool, dry place. Do not freeze.