Ranitidine, commonly known by its brand name Zantac, is a medication that was first approved by the U.S Food and Drug Administration (FDA) in 1981 to treat gastroesophageal reflux disease (GERD) and stomach ulcers by reducing the amount of acid produced by the stomach. https://articlescad.com/ranitidine-a-commonly-used-drug-for-treating-acid-reflux-and-ulcers-96832.html