Last Updated December 18, 2020 Zantac is the brand name for ranitidine, a very popular medication used for the treatment of issues associated with heartburn, ulcers, and Gastro-Esophageal Reflux Disease (GERD). Ranitidine is part of a larger family of drugs known as histamine H2-receptor antagonists or “H2-blockers” for their method of action in blocking the … Continue reading Zantac (Ranitidine) Commonly Asked Questions