Aluminum hydroxide is an antacid available in over-the-counter (OTC) medicines that relieve heartburn, acid indigestion, sour stomach, and upset stomach. Aluminum hydroxide can be found in heartburn medicines that contain more than one antacid active ingredient. It can also be found in medicines that treat other symptoms, such as gas.
Aluminum hydroxide is approved by the U.S. Food and Drug Administration (FDA) and is safe and effective when used according to the Drug Facts label. Antacids containing aluminum hydroxide may interact with certain prescription drugs. If you are taking a prescription medicine, do not take an OTC medicine containing aluminum hydroxide without consulting a healthcare provider.