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

Through a silicone elastomer that reduces the appearance of fine lines, wrinkles, large pores and uneven texture, plus vitamin C and niacinamide that address dullness. —Michelle Lee, PEOPLE, 13 Jan. 2026

Then there’s hyaluronic acid, ceramides, niacinamide, and alpha hydroxy acids. —Tamim Alnuweiri, InStyle, 13 Jan. 2026

The Korean beauty brand, Beauty of Joseon, utilizes Ginseng extract, retinol, and niacinamide for a powerful yet gentle eye cream. —Gabriela Izquierdo, Southern Living, 2 Jan. 2026

What sets this formula apart is the inclusion of ascorbyl glucoside and niacinamide, a vitamin C derivative and brightening staple that improves the look of uneven tone and dark spots over time. —Jailynn Taylor, Allure, 1 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