Omeprazole slightly to moderately increases the exposure to citalopram. Manufacturer advises monitor and adjust dose. Omeprazole can be used in the treatment of gastroesophageal reflux disease (GERD), peptic ulcers, erosive esophagitis, Zollinger-Ellison syndrome, and eosinophilic esophagitis. Find patient medical information for Omeprazole Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Heartburn (Gastric Reflux) chemotherapy side effect, causes, symptom management and when to contact your healthcare provider during cancer treatment. Omeprazole is an inexpensive drug used to treat certain conditions where there is too much acid in the stomach like ulcers and gastroesophageal reflux disease. It is more popular than comparable drugs. Omeprazole, approved by the FDA, is available as a prescription and over-the-counter (OTC) drug used as a treatment for frequent heartburn. Learn about side effects, drug interactions, dosages, warnings, and more. Posologie chez l'adulte. Traitement des ulcères duodénaux. La dose recommandée chez les patients ayant un ulcère duodénal évolutif est 20 mg d'OMEPRAZOLE une fois par jour. Chez la plupart des patients, la cicatrisation survient dans les 2 semaines. Posologie chez l'adulte. La dose recommandée est de 20 mg une fois par jour pendant 14 jours. Il peut être nécessaire de prendre la gélule pendant 2 ou 3 jours consécutifs pour obtenir une amélioration des symptômes. Prescription omeprazole is used alone or with other medications to treat the symptoms of gastroesophageal reflux disease (GERD), a condition in which backward flow of acid from the stomach causes heartburn and possible injury of the esophagus (the tube between the throat and stomach) in adults and children 1 year of age and older. Consumer information about the OTC and prescription drug omeprazole (Prilosec, Zegerid Prilosec OTC, Zegerid OTC) used for treating acid-induced inflammation and ulcers of the stomach and duodenum, gastroesophageal reflux disease (GERD), heartburn, and Zollinger-Ellison Syndrome.