omep·​ra·​zole | \ ō-ˈme-prə-ˌzōl How to pronounce omeprazole (audio) , -ˈmē-, -ˌzȯl How to pronounce omeprazole (audio) \

Definition of omeprazole

: a benzimidazole derivative C17H19N3O3S that inhibits gastric acid secretion

Examples of omeprazole in a Sentence

Recent Examples on the Web The PPIs include omeprazole (Prilosec), lansoprazole (Prevacid), pantoprazole (Protonix), and esomeprazole (Nexium). Chronicle Staff,, 12 July 2020 To date, the FDA's testing has not found NDMA in famotidine (Pepcid), cimetidine (Tagamet), esomeprazole (Nexium), lansoprazole (Prevacid) or omeprazole (Prilosec). USA TODAY, 1 Apr. 2020 To date, the FDA has not found NDMA in some other products, such as famotidine or Pepcid, esomeprazole or Nexium, or omeprazole or Prilosec. Jacqueline Howard, CNN, 1 Apr. 2020 Other heartburn medications, such as famotidine (Pepcid), cimetidine (Tagamet), esomeprazole (Nexium), lansoprazole (Prevacid) and omeprazole (Prilosec) have not tested positive for signs of NDMA. NBC News, 20 Jan. 2020 The price of her generic version of Zegerid, which is manufactured by Dr. Reddy's Laboratories, is significantly higher than the sum of the prices of its main ingredients: omeprazole and sodium bicarbonate. NBC News, 29 Dec. 2019 As health minister Maria Luisa Carcedo explained to reporters Wednesday, staff accidentally put minoxidil—the active ingredient in Rogaine—into containers marked as the heartburn treatment omeprazole. Meilan Solly, Smithsonian, 31 Aug. 2019 Immediately upon arriving at the clinic, they were fed intravenously and given cortisone to reduce inflammation, antibiotics to treat their infections, and a medication called omeprazole for their stomach ulcers. Nichole Sobecki, National Geographic, 21 Nov. 2019 The syrups were supposed to include the drug omeprazole, a common drug to treat acid reflux. Beth Mole, Ars Technica, 29 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'omeprazole.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of omeprazole

1984, in the meaning defined above

History and Etymology for omeprazole

International Scientific Vocabulary omepr- (of unknown origin) + benzimidazole

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The first known use of omeprazole was in 1984

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Cite this Entry

“Omeprazole.” Dictionary, Merriam-Webster, Accessed 28 Nov. 2021.

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More Definitions for omeprazole


omep·​ra·​zole | \ ō-ˈmep-rə-ˌzōl How to pronounce omeprazole (audio) , -ˈmē-prə- How to pronounce omeprazole (audio) , -ˌzȯl \

Medical Definition of omeprazole

: a drug C17H19N3O3S that inhibits gastric acid secretion and is taken orally in the short-term treatment of duodenal and gastric ulcers, gastroesophageal reflux disease, erosive esophagitis, and disorders (such as Zollinger-Ellison syndrome) involving gastric acid hypersecretion

Note: Omeprazole is a benzimidazole derivative that acts by inhibiting the activity of proton pumps in the stomach. It is marketed under the trademark Prilosec.


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