" The ONLY chewable tablet that is formulated to closely resemble the electrolyte profile lost in sweat: sodium, potassium, calcium and magnesium. 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). Features: 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, 6 mg magnesium. Suggested use: 2 tablets per 15-30 minutes during activity. Ingredients are: non-GMO, gluten-free, vegetarian, fat-free. Natural stevia as sweetener. No colour added. Bio-available active ingredients. Also great for youth sports, travel rehydration, tennis and other sports, camping & hiking, effects of alcohol. "