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. Two SaltStick Caps in an hour equate to 430 mg sodium, 126 mg potassium, 44 mg calcium, and 22 mg magnesium per hour, which is the ideal ratio to keep you moving.