Antacid
Substance that relieves stomach problems / From Wikipedia, the free encyclopedia
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This article is about the medication used to relieve heartburn. For the acid produced by ants, known in many languages as "ant acid", see Formic acid.
An antacid is a substance that neutralizes stomach acidity and is used to relieve heartburn, indigestion, or an upset stomach.[1] Some antacids have been used in the treatment of constipation and diarrhea.[2] Marketed antacids contain salts of aluminum, calcium, magnesium, or sodium.[2] Some preparations contain a combination of two salts, such as magnesium carbonate and aluminum hydroxide (e.g., hydrotalcite).[3]