Zaltac Vial Injection contains Ranitidine Hydrochloride, an H2 receptor antagonist that works by red...Zaltac Vial Injection contains Ranitidine Hydrochloride, an H2 receptor antagonist that works by reducing gastric acid secretion. It is indicated for the treatment of duodenal and gastric ulcers, GERD (gastroesophageal reflux disease), Zollinger–Ellison syndrome, stress-induced gastritis, and upper GI bleeding.See more