Zantac is used to treat and prevent heartburn and other symptoms caused by too much acid in the stomach, according to WebMD. It is also used to treat gastroesophageal reflux disease, Zollinger-Ellison syndrome, erosive esophagitis, and ulcers of the stomach and the intestines.
There are different formulations of Zantac, and some are available only by prescription. Zantac is known as an H2 histamine blocker and it works by reducing the amount of acid in the stomach. This helps heal and prevent ulcers and improves symptoms such as heartburn and stomach pain, according to WebMD. Zantac should be taken as prescribed, and it should be taken at the same time each day. Using other antacids along with Zantac is allowable with doctor permission. Dosing for children should be undertaken only with medical supervision.
The non-prescription formulas of Zantac should be taken with water and as only needed. It is advised to read the manufacturer instructions included in the package and follow the dosing instructions. A patient should not take more than two pills per day or for more than 14 consecutive days without consulting with a doctor. If the condition persists or worsens, WebMD advises that the patient should consult with a physician.