In each chewable tablet Other Information: Each chewable tablet contains: calcium 300 mg. Store at room temperature. Avoid excessive heat above 40 degrees C (104 degrees F). Close cap tightly after use. Starts neutralizing acid in seconds! Heartburn + gas Reliefchews. Paraben free. Questions or comments? 1-800-986-0369 (Mon-Fri 9am-5pm EST).