Endura - Provides carbohydrates in the form of glucose polymers and fructose, delivered in a special, balanced blend designed to Enhance delay the onset of fatigue during strenuous activity. Delivers key electrolytes to Enhance replace those excreted through sweat during exercise, activity, and/or hot weather conditions. Provides high concentrations of absorbable magnesium, a mineral essential for cellular energy metabolism and glucose homeostasis. Available in delicious, all natural Orange and Lemon-Lime flavors.