Ingredients Each 1 oz dose of Endura-Max Plus provides: Sodium (min.) 5,528 mg Chloride (min.) 11,886 mg Potassium (min.) 3,657 mg Calcium (min.) 754 mg Magnesium (min.) 153 mg Endura-Max electrolyte powder is specifically designed to meet the needs of endurance horses, which have unique electrolyte requirements due to the nature of their long, low-intensity exercises. Unlike other horses, endurance horses lose significant amounts of sodium, chloride, potassium, calcium, and magnesium through sweat. The balanced formula of Endura-Max replenishes these essential electrolytes to maintain hydration, health, and performance. Key benefits of Endura-Max: Provides key electrolytes such as sodium, chloride, and potassium. Includes additional calcium and magnesium, vital for endurance performance. Supports hydration by stimulating thirst. Trusted by top endurance riders worldwide for optimal performance. This product is particularly suited for horses engaging in extended periods of exertion, ensuring their electrolyte needs are adequately met for better endurance and recovery.