SaltStick Electrolyte Capsules have been designed for endurance athletes to aid their performance and are crucial to minimizing muscle cramping, heat stress and fatigue and the dispensers provide you with a way to take them just about anywhere. SaltStick Capsules have everything you need for electrolyte replacement, and nothing extra. In each drop of sweat you lose key electrolytes: sodium, potassium, calcium and magnesium. The key to effective electrolyte replacement is to replenish lost sodium, potassium, calcium and magnesium in a quantity and form your body can absorb. SaltStick Electrolyte capsules and dispensers are designed for cyclists, triathletes, runners, and adventure racers.