Yes, 40mg of omeprazole is a higher prescription dose than the usual starting dose for common reflux symptoms, but it is not unusually high, and it is often the right dose for the job. Omeprazole is used to treat conditions that appear in the patient having too much stomach acid. This medication is available over-the-counter and in stronger doses via prescription. This medication is not intended for long term use without taking breaks between regimens. 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. Detailed Omeprazole dosage information for adults and children. Includes dosages for Gastroesophageal Reflux Disease, Dyspepsia, Gastric Ulcer and more; plus renal, liver and dialysis adjustments. Omeprazole is a proton pump inhibitor that is used to treat symptoms of gastroesophageal reflux disease and other conditions caused by excess stomach acid. Omeprazole is a medicine that reduces the amount of acid in your stomach. It's used to treat conditions such as heartburn. You can buy some types from pharmacies and shops, but most types are only available with a prescription. Omeprazole is a medication that treats conditions that cause too much stomach acid like heartburn, stomach ulcers and reflux disease. It works by reducing the amount of acid in your stomach. Omeprazole (Prilosec) is an inexpensive drug used to treat certain conditions where there is too much acid in the stomach like ulcers and gastroesophageal reflux disease (GERD). It is more popular than comparable drugs. It is available in both generic and brand versions, and without a prescription. Find patient medical information for Omeprazole (Prilosec, Prilosec OTC) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Omeprazole is used to treat certain stomach and esophagus problems (such as acid reflux, ulcers). It works by decreasing the amount of acid your stomach makes. It relieves symptoms such as heartburn, difficulty swallowing, and cough.