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

With the addition of niacinamide and tea tree leaf water, the formula also helps soothe irritation and fight oil-slick sebum production. —Rosa Jisoo Pyo, Vogue, 8 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

The subtle tint helps even out tone and add a bit of radiance, while ingredients like niacinamide support a brighter, more balanced complexion over time. —Brigitt Earley, Glamour, 24 Apr. 2026

Word History

First Known Use

1942, in the meaning defined above

Rhymes for niacinamide

• acetazolamide
• polyacrylamide
• acrylamide
• 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