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.

  • You have kidney disease.
  • You are on a sodium-restricted diet.
  • You are taking a prescription medicine. Antacid active ingredients may interact with certain drugs.
  • You are pregnant or breastfeeding.
  • Your symptoms last more than two weeks.
  • You take too much. Immediately contact a healthcare provider or the poison control national helpline at 800.222.1222.
  • Talk to a healthcare provider before giving an OTC containing sodium bicarbonate to a child under the age of 12.
  • Click here for more information on giving OTCs to children.