You are in Drugs and Herbs . It is used to treat gastric and duodenal ulcers and gastroesophageal reflux disease, a condition in which the acid in the stomach washes back up into the esophagus. Omeprazole is also used to treat Zollinger-Ellison disease, a condition in which the stomach produces too much acid.
Omeprazole works by decreasing the amount of acid produced by the stomach.
This medicine is available only with your doctor's prescription. In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. Tell your doctor if you have ever had any unusual or allergic reaction to omeprazole. Also tell your health care professional if you are allergic to any other substances, such as foods, preservatives, or dyes.