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

Meanwhile, allantoin, niacinamide, and the blend of peptides reduce transepidermal water loss. —Beatrice Zocchi, Vogue, 11 May 2026

At its base is 63% Hippophae rhamnoides (more commonly known as sea buckthorn) water, rich in naturally occurring antioxidants, paired with 5% niacinamide and 2% tranexamic acid to target dullness and dark spots without feeling stingy like a peel. —Christa Joanna Lee, Allure, 9 May 2026

This two-in-one Dove cream pulls double duty as a moisturizing lotion and a serum that’s packed with niacinamide, vitamin C, pro-retintol, and shea butter to minimize the appearance of dark spots, even your complexion, smoothen texture, and brighten the skin. —Alicia Geigel, Southern Living, 3 May 2026

Pacifica's matcha green tea and niacinamide fine refreshes on contact and helps strengthen the skin's barrier over time. —Jackie Fields, PEOPLE, 1 May 2026

Word History

First Known Use

1942, in the meaning defined above

Rhymes for niacinamide

• acetazolamide
• polyacrylamide
• acrylamide
• cyanamide
• procainamide
• sulfonamide
• sulphonamide
• 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