Alka Seltzer Heartburn Relief and Gas Relief Chews deliver fast and powerful heartburn, gas and bloating relief. These heartburn and gas chews contain calcium carbonate that starts neutralizing stomach acid in seconds, with simethicone that reduces bloating and pressure. These antigas and antacid tablets bring you fast acting and effective relief of heartburn, acid indigestion and upset stomach associated with these symptoms while alleviating that stuffed feeling commonly referred to as gas. Offering a delicious tropical punch flavor without the chalky or gritty taste, these Alka Seltzer Relief Chews provide gas and heartburn relief that's easy to take with you everywhere.