SaltStick Fastchews 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 Fastchews in an hour equate to 100 mg sodium, 30 mg potassium, 10 mg magnesium, and 6 mg calcium per hour, which is the ideal ratio to keep you moving. Fastchews help to reduce muscle cramping and heat stress, boost stamina, and maintain electrolyte levels. Chewable tablets provide fast absorption through buccal mucosa (tissue in mouth). Tart Orange. Mixed Berry and Zesty Lemon-Lime natural flavours encourage consumption.