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

Also present in the formula is niacinamide to smooth skin and reduce hyperpigmentation, and collagen to provide moisture. —Isabel Bekele, InStyle, 1 Feb. 2026

This formula contains niacinamide to help support hair and skin health, ashwagandha extract to soothe, and biotin to help strengthen hair and prevent breakage. —Andrea Navarro, Glamour, 29 Jan. 2026

Also inside are soothing Centella Asiatica, which brings down inflammation, with a powerful blend of tranexamic acid, kojic acid, niacinamide, and azelaic acid (essentially a Who's Who of brightening ingredients). —Deanna Pai, Allure, 29 Jan. 2026

Brezavscek points barrier-supportive formulas, such as fatty acids, peptides, ceramides, hyaluronic acid, and niacinamide are key to soothe skin and restore its lipid balance. —Kiana Murden, Vogue, 29 Jan. 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