Metagenics Endura Electrolyte Powder Lemonade is a dietary supplement for rehydration and energy support. Endura provides a blend of electrolyte minerals that are located in muscle cells as well as magnesium and is designed to support fluid absorption and deter dehydration. Magnesium is an essential mineral for cellular energy metabolism. The magnesium included has been formulated to minimize gastric discomfort. Carbohydrates are also offered as glucose polymers and fructose in a balanced ratio to support a delay in fatigue onset during strenuous activity as well as supporting rehydration. This formula is provided in a tasty lemonade flavor. Recommended use: Thoroughly Mix 1 packet into 8 fluid ounces of water 10-15 minutes before exercise and every 15 minutes when exercising or as directed by a healthcare professional. Metagenic Endura Electrolyte Powder Lemonade Packets Facts: 1 Packet contains: Calories 10 Total Carbohydrate 2g Vitamin C (as ascorbic acid) 120mg Vitamin E (as d-alpha tocopheryl acetate)20.1 mg Thiamin (as thiamin mononitrate) 2 mg Riboflavin 5mg Niacin (as niacinamide) 10mg Vitamin B6 (as pyridoxine HCl) 5 mg Pantothenic Acid (as calcium D-pantothenate) 28 mg Calcium (as calcium citrate) 50 mg Phosphorous (as dipotassium phosphate) 20 mg Magnesium (as magnesium bis-glycinate) 150 mg Chromium (as chromium picolinate) 83 mcg Chloride (as sodium chloride) 270mg Sodium (as sodium chloride) 180mg Potassium (as dipotassium phosphate) 100mg Malic Acid 500mg Taurine 500mg L-Alanyl-L-Glutamine 150mg Other Ingredients: Citric acid, natural flavors,and rebaudioside A (from Stevia rebaudiana leaf extract).