Omeprazole is used to treat certain conditions where there is too much acid in the stomach. It is used to treat gastric and duodenal ulcers, erosive esophagitis, and gastroesophageal reflux disease (GERD). GERD is a condition where the acid in the stomach washes back up into the esophagus. Omeprazole, sold under the brand names Prilosec and Losec among others, is a medication used in the treatment of gastroesophageal reflux disease (GERD), peptic ulcer disease, and Zollinger–Ellison syndrome. [1] Omeprazole (Prilosec) is a proton pump inhibitor (PPI) that is used to reduce the amount of acid in your stomach and it can be bad for your kidneys. It can cause acute kidney injury and may also worsen the progression of chronic kidney disease (CKD). Prilosec (Omeprazole) may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. PRILOSEC is indicated for short-term treatment of active duodenal ulcer in adults. Most patients heal within four weeks. Some patients may require an additional four weeks of therapy. Prilosec is a proton pump inhibitor that decreases the amount of acid produced in the stomach. Prilosec is used to treat symptoms of gastroesophageal reflux disease (GERD) and other conditions caused by excess stomach acid. Overview: Omeprazole is used for heartburn, acid reflux, and other conditions where you have too much acid in your stomach. It works by reducing how much acid your stomach makes and usually takes. Prilosec delayed-release oral suspension is a prescription medicine used to reduce the amount of acid in your stomach. Prilosec is a proton pump inhibitor. Buy Prilosec OTC, Omeprazole 20mg, Medicine, Acid Reflux Medicine, 24 Hour Relief, 42 Tablets on Amazon.com FREE SHIPPING on qualified orders Prescription omeprazole is used to treat damage from GERD in adults and children 1 month of age and older. Prescription omeprazole is used to allow the esophagus to heal and prevent further damage to the esophagus in adults and children 1 year of age and older with GERD.