Omeprazole is used to treat certain digestive conditions including stomach ulcers, duodenal ulcers, GERD, and esophagitis due to GERD. It’s also taken with antibiotics to treat H. pylori infection.

Omeprazole is a common drug that some people take to treat heartburn, or acid reflux. This article looks at its uses, dosage, and side effects, as well as what to know before taking the medication.