what is an antacid for
Antacids are taken to relieve heartburn or indigestion caused by excess stomach acid. There are several kinds of antacids. Learn what ingredients are in each type so that you can avoid any adverse effects. 1  Sodium bicarbonate antacids (such as Alka-Seltzer and Bromo Seltzer) contain baking soda. 2  Avoid these antacids if you have high blood pressure or are on a salt-restricted diet.