cys·​te·​amine si-ˈstē-ə-mən How to pronounce cysteamine (audio)
: a cysteine derivative C2H7NS used especially to treat cystinuria

Examples of cysteamine in a Sentence

Recent Examples on the Web With the smell under control, Shah and her team began studying cysteamine. Allure Editors, Allure, 13 Sep. 2022 That’s why patients on the standard treatment, a drug called cysteamine, still get sicker and die of their disease, Cherqui said. Sarah Zhang, The Atlantic, 22 June 2022 Found in its highest concentration in human milk, cysteamine is a newer ingredient in the market for treating hyperpigmentation when blended with niacinamide. Dori Price, Good Housekeeping, 23 Mar. 2021

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

Word History


cysteine + amine

First Known Use

1943, in the meaning defined above

Time Traveler
The first known use of cysteamine was in 1943

Dictionary Entries Near cysteamine

Cite this Entry

“Cysteamine.” Dictionary, Merriam-Webster, Accessed 24 Apr. 2024.

Medical Definition


cys·​te·​amine sis-ˈtē-ə-mən How to pronounce cysteamine (audio)
: a cysteine derivative used in the form of its bitartrate C2H7NS·C4H6O6 to treat cystinosis and especially formerly as an antidote for acetaminophen overdose

More from Merriam-Webster on cysteamine

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