ra·​nit·​i·​dine ra-ˈni-tə-ˌdēn How to pronounce ranitidine (audio)
: a histamine blocker C13H22N4O3S that is administered in the form of its hydrochloride to inhibit gastric acid secretion

Examples of ranitidine in a Sentence

Recent Examples on the Web In 2019, the lab's discovery of a carcinogen in the heartburn medication Zantac (ranitidine) prompted the FDA to issue an immediate market withdrawal request for Zantac and generic ranitidine in April 2020. Karen Pallarito, Health.com, 28 May 2021 But Judge Robin Rosenberg said experts hired by the plaintiffs did not establish that ranitidine causes cancer. Byscience News Staff, science.org, 15 Dec. 2022 A few years ago, the small lab Valisure generated headlines after purportedly finding astronomical levels of the cancer-causing chemical NDMA in Zantac (ranitidine). The Editorial Board, WSJ, 8 Dec. 2022 The active ingredient in Zantac, ranitidine, was found to form NDMA over time or when stored at high temperatures. BostonGlobe.com, 14 Oct. 2021 The moves come despite the fact that the FDA has not recalled Zantac or any brands that include ranitidine, nor has the agency recommended patients stop taking drugs with that ingredient. Chris Morris, Fortune, 30 Sep. 2019 For patients taking prescription ranitidine, the FDA said to talk to your doctor about other treatment options before stopping the medicine. Jacqueline Howard, CNN, 1 Apr. 2020 Luckily, there are lots of drugs that can help you out with heartburn struggles that don’t contain ranitidine. Sara Kiley Watson, Popular Science, 6 Apr. 2020 The move from the Food and Drug Administration Wednesday applies to all prescription and over-the-counter versions of ranitidine, best known by the brand name Zantac. CBS News, 1 Apr. 2020 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'ranitidine.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


probably from ranit- (blend of furan and nitr-) + -idine (as in cimetidine)

First Known Use

1979, in the meaning defined above

Time Traveler
The first known use of ranitidine was in 1979

Dictionary Entries Near ranitidine

Cite this Entry

“Ranitidine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ranitidine. Accessed 27 Sep. 2023.

Medical Definition


ra·​nit·​i·​dine ra-ˈnit-ə-ˌdēn How to pronounce ranitidine (audio)
: an antihistamine that is administered in the form of its hydrochloride C13H22N4O3S·HCl to inhibit gastric acid secretion (as in the treatment of duodenal ulcers or Zollinger-Ellison syndrome) see zantac

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