SaltStick Caps have been formulated to provide electrolytes to help minimize heat stress and muscle cramping due to perspiration, in a quantity and form which your body can absorb. This product is ideal for athletes, outdoor workers or for use in hot conditions.Why do so many world-champion athletes choose SaltStick for their electrolyte replacement? Simply because SaltStick Caps 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.