Sodium bicarbonate is an antacid active ingredient available in over-the-counter (OTC) medicines that relieve heartburn, acid indigestion, and sour stomach. It can be found in heartburn medicines that contain other antacid active ingredients or in medicines that contain acid reducer active ingredients. It can also be found in medicines that treat other symptoms, such as headache, body aches, and body pains.
Sodium bicarbonate is approved by the U.S. Food and Drug Administration (FDA) and is safe and effective when used according to the Drug Facts label directions. If you are on a low-salt diet, you should check with your healthcare provider before using a medicine containing sodium bicarbonate.