ci·​met·​i·​dine | \ sī-ˈme-tə-ˌdēn How to pronounce cimetidine (audio) \

Definition of cimetidine

: a histamine analog C10H16N6S that inhibits gastric acid secretion and is used especially in the treatment of duodenal ulcers

Examples of cimetidine in a Sentence

Recent Examples on the Web Are there any problems taking cimetidine occasionally? Dr. Keith Roach, oregonlive, 2 June 2022 For example, there is some benefit to the medicine cimetidine, normally used as an antacid treatment. Dr. Keith Roach, oregonlive, 8 June 2021 Alternative histamine blockers like famotidine (Pepcid) and cimetidine (Tagamet) have so far not been found to contain NDMA, Dr. Smith said, and neither has Prilosec nor other proton pump inhibitors. Christina Caron, New York Times, 18 Apr. 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 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 Federal regulators said other heartburn medications, such as famotidine (Pepcid), cimetidine (Tagamet), esomeprazole (Nexium), lansoprazole (Prevacid) and omeprazole (Prilosec) have not tested positive for signs of NDMA. Erika Edwards, NBC News, 9 Jan. 2020 This class includes Tagamet HB (cimetidine), Pepcid (famotidine) and Zantac (ranitidine). Serena Gordon,, 5 Aug. 2019 They are also sold under generic names, including famotidine, cimetidine and ranitidine. Bradley J. Fikes,, 3 July 2017 See More

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

First Known Use of cimetidine

1975, in the meaning defined above

History and Etymology for cimetidine

ci- (alteration of cyan-) + methyl + -idine

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The first known use of cimetidine was in 1975

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Cite this Entry

“Cimetidine.” Dictionary, Merriam-Webster, Accessed 18 Aug. 2022.

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More Definitions for cimetidine


ci·​met·​i·​dine | \ sī-ˈmet-ə-ˌdēn How to pronounce cimetidine (audio) \

Medical Definition of cimetidine

: an H2 antagonist C10H16N6S that like histamine contains the ring structure of imidazole and is used to inhibit gastric acid secretion in conditions in which such secretion produces duodenal or gastric ulcers or erosive lesions (as in serious cases of gastroesophageal reflux disease) — see tagamet

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