GU Electrolyte Brew is water's new best friend. The fact is, when you work out you sweat more than just water. So when you drink you gotta have a special brew with the right amounts of sodium, potassium and carbohydrates to bring your system back into balance. Used consistently, GU Electrolyte Brew will help you perform better and go longer. Simple is Better: No gimmicky additives here. GU Electrolyte Brew is as simple as they come –with just a handful of key ingredients. Complex and simple carbs in optimal balance, vital electrolytes at the proper levels for intense exercise and all-natural flavors. Simple. This means it's easy on your stomach and will keep you focused on reaching your goals in training and racing. For optimal results, always drink 20-30 oz of GU Electrolyte Brew per hour during training or racing. This item is nonreturnable.