Prilosec (Omeprazole) medicine is a proton pump inhibitor (PPI) used to treat ulcers, heartburn, gastroesophageal reflux, or Zollinger-Ellison syndrome. Prilosec (Omeprazole) works by blocking acid production in the stomach. Prilosec (Omeprazole) may be used in combination with antibiotics (e.g., amoxicillin, clarithromycin) to treat certain types of ulcers. Take Prilosec (Omeprazole) before a meal, unless otherwise directed by your doctor. Prilosec (Omeprazole) may be taken with antacids if your doctor has instructed you to take antacids. Potent acid-reducing medicines such as omeprazole can decrease the effectiveness of sucralfate, as well as other drugs such as the antifungals ketoconazole and itraconazole. If instructed to take any of these medicines while taking Prilosec (Omeprazole), consult your doctor or pharmacist regarding the proper timing of each dose.
Prilosec side effects that may go away during treatment, include headache, constipation, cough, dizziness, or rash. If Prilosec side effects continue or are bothersome, check with your doctor.