niacinamide

noun

ni·​a·​cin·​amide ˌnī-ə-ˈsi-nə-ˌmīd How to pronounce niacinamide (audio)
: a compound C6H6N2O of the vitamin B complex found especially as a constituent of coenzymes and used similarly to niacin

called also nicotinamide

Examples of niacinamide in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Packaging makes application messy This silky K-beauty essence pairs NAD+ with niacinamide and a powerhouse blend of 50 (yes, really, 50) peptides. — Sheryl George, Glamour, 2 Sep. 2026 Lest that sound intense, the K-beauty serum also contains niacinamide and allantoin—known for their soothing, anti-inflammatory properties—to minimize any risk of irritation. — Deanna Pai, Vogue, 2 Sep. 2026 Its signature SuperVitamin blend now has five times the vitamins, including niacinamide (vitamin B3) to help repair skin damage, panthenol (vitamin B5) to nourish and replenish moisture, and vitamin C to visibly brighten the complexion over time. — Beth Sobol, Flow Space, 2 Sep. 2026 It’s formulated with hero ingredient Salmon DNA PDRN to smooth and soothe your skin barrier, niacinamide to boost your complexion’s glow, and peptides to seal in deep hydration. — Kyra Surgent, InStyle, 30 Aug. 2026 See All Example Sentences for niacinamide

Word History

First Known Use

1942, in the meaning defined above

Time Traveler
The first known use of niacinamide was in 1942

Rhymes for niacinamide

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Browse Nearby Words

niacin
niacinamide
Niagara
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Cite this Entry

“Niacinamide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/niacinamide. Accessed 7 Sep. 2026.

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Kids Definition

niacinamide

noun
ni·​a·​cin·​amide ˌnī-ə-ˈsin-ə-ˌmīd How to pronounce niacinamide (audio)
: a compound of the vitamin B complex that is used like niacin

Medical Definition

niacinamide

noun
ni·​a·​cin·​amide ˌnī-ə-ˈsin-ə-ˌmīd How to pronounce niacinamide (audio)
: a bitter crystalline basic amide C6H6N2O that is a member of the vitamin B complex and is formed from and converted to niacin in the living organism, that occurs naturally usually as a constituent of coenzymes, and that is used similarly to niacin

called also nicotinamide

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