The premium quality ingredients in GU Recovery Brew help you quickly replenish energy stores and rebuild muscles after an intense workout. GU Recovery Brew relies on whey protein isolate — not cheaper whey protein concentrate — to create a higher quality and more effective product. Arginine and Glutamine promote recovery by mitigating the effects of intense training and supporting a strong immune system. Both simple and complex carbs in optimal balance will re-fuel your competitive fire and get you back to training and racing on schedule. Chocolate Smoothie flavored 13 serving canister.