Prilosec is a medicine called a proton pump inhibitor (PPI). It reduces the amount of acid in your stomach. Prilosec is used in adults for the short-term treatment of stomach and duodenal ulcers (ulcer in the upper intestine), gastroesophageal reflux disease (GERD), and erosive esophagitis (inflammation of the esophagus [tube that connects your mouth and stomach] due to excess acid).
Prilosec is also used to prevent a relapse of esophagitis; for long-term treatment of conditions where the stomach makes too much acid, such as Zollinger-Ellison syndrome; and with other medicines to eliminate the bacteria that often cause ulcers (known as Helicobacter pylori).
In addition, Prilosec is used for the short-term treatment of GERD and erosive esophagitis in children and adolescents. Prilosec is available as capsules or an oral suspension.
Prilosec OTC, an over-the-counter product, is only used to treat frequent heartburn (occurring 2 or more days a week).
Prilosec can cause low magnesium levels in your body. Tell your doctor immediately if you have seizures, dizziness, abnormal or fast heartbeat, jitteriness, jerking movements or shaking, muscle weakness, spasms of your hands and feet, cramps or muscle aches, or spasm of your voice box.
Tell your doctor if you experience any symptoms of a serious allergic reaction with Prilosec (such as rash, face swelling, throat tightness, or difficulty breathing).
People who are taking multiple daily doses of Prilosec for a long period of time may have an increased risk of fractures of the hip, wrist, or spine.