Other Information: Each chewable tablet contains: calcium 300 mg. Store at room temperature. Avoid excessive heat above 104 degrees F (40 degrees C). Close cap tightly after use. Misc: Calcium carbonate/antacid. New flavor! Fast powerful relief of heartburn; acid indigestion; upset stomach. Visit MLB.com. Questions? 1-800-986-0369 (Mon-Fri 9 AM - 5 PM EST) or www.alkaseltzer.com. Made in the USA of US & imported materials.