Alka Seltzer Heartburn ReliefChews, Extra Strength, Chewable Tablets, Cool Mint

Starts neutralizing acid in seconds! New cooling sensation! Cool action. Calcium carbonate/antacid. Questions or comments? 1-800-986-0369 (Mon - Fri 9am - 5pm EST). Other information: Each Chewable Tablets Contains: Calcium 300 mg. Store at a room temperature. Avoid excessive heat above 104 degrees F (40 degrees C). Avoid excessive humidity. Close gap tightly after use.