ROCTANE Electrolyte Capsules provide efficient electrolyte replenishment during exercise in hot or humid conditions, helping to maintain fluid balance, plasma volume and ward off fatigue and cramps. Each bottle contains 50 capsules packed with electrolytes such as sodium, magnesium and chloride. It is recommended to take 1-2 capsules per hour with a minimum of 16 oz of fluids per hour to ensure adequate hydration.