Fastchews Chewable Electrolyte Tablets by SaltStick are formulated to closely resemble the electrolyte profile lost in sweat: sodium, potassium, calcium, and magnesium. These tablets help reduce muscle cramping and heat stress, boost stamina, and maintain electrolyte levels. The chewable tablets provide fast absorption through the buccal mucosa (tissue in the mouth). Made in the USA, free of banned substances, and independently tested. Each serving (2 tablets) contains 100 mg sodium, 30 mg potassium, 10 mg calcium, and 6 mg magnesium. Ingredients are non-GMO, gluten-free, vegetarian, and fat-free, with natural stevia as a sweetener. Suitable for various activities such as youth sports, travel rehydration, tennis, camping & hiking, and the effects of alcohol.