Omeprazole magnesium (Prilosec®) is a prescription medicine used to treat ulcers, gastroesophageal reflux disease (GERD), and other conditions. Nonprescription omeprazole magnesium is also available; it is sold under the name Prilosec OTC® and is approved to treat frequent heartburn that occurs at least twice a week.
Omeprazole works by decreasing acid production in the stomach. In most cases, it is taken once or twice a day. Before you start using omeprazole, it is important to talk to your healthcare provider if you are pregnant, have liver disease, or have any allergies.
(For more information on this medicine, click Omeprazole. This article offers a complete overview of this drug, including possible side effects, generic availability, how it performed in clinical trials, and more.)