niacinamide

noun

ni·​a·​cin·​amide ˌnī-ə-ˈsi-nə-ˌmīd 

: 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

The niacinamide and amino peptide combination alongside retinol is the kind of multi-active formula that used to be reserved for higher-end products. —Lauren Jarvis-Gibson, Miami Herald, 30 Mar. 2026

Featuring the dynamic duo of vitamin C and retinol, boosted by the power of vitamin B3 (niacinamide) and salicylic acid, along with soothing organic aloe vera, squalane, hyaluronic acid, MSM and rose hip oil to rejuvenate, nourish and target uneven skin tone. —Tory Johnson, ABC News, 28 Mar. 2026

To top it off, the serum includes hyaluronic acid, biotin, and niacinamide to keep your scalp calm, hydrated, and thriving, so your hair can live its best, fullest life. —Kansas City Star, 27 Mar. 2026

Saturday Skin’s Yuzu Vitamin C Sleep Mask pairs yuzu with ascorbic acid and niacinamide to brighten and even tone overnight. —Christa Joanna Lee, Allure, 26 Mar. 2026

Word History

First Known Use

1942, in the meaning defined above

Rhymes for niacinamide

• acrylamide
• procainamide
• sulfonamide
• sulphonamide
• acetazolamide
• polyacrylamide
• amide
• nicotinamide
• sulfanilamide

Kids Definition

niacinamide

noun

ni·​a·​cin·​amide ˌnī-ə-ˈsin-ə-ˌmīd 

: 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 

: 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