Designed for long-duration and high-intensity training and racing with more electrolytes for hydration and amino acids for your muscles Contains up to three times the amino acids and sodium than standard gels and also includes Taurine Available in caffeinated and non caffeinated flavors. Caffeinated flavors come with either 35mg or 70mg of caffeine Retailers are not permitted to sell on the Amazon.com marketplace unless authorized in writing by GU