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 Kérastase Nutritive Bain Satin Riche Shampoo is also packed with niacinamide. —Tamim Alnuweiri, InStyle, 29 May 2026

This serum foundation features vitamin B5 and E to help nourish and smooth skin, plus niacinamide to correct redness and minimize inflammation. —Alanna Martine Kilkeary, Glamour, 28 May 2026

Amino acids, caffeine, and niacinamide round out the formula to keep the scalp feeling balanced and healthy. —Christa Joanna Lee, Allure, 27 May 2026

It’s packed with ceramides, niacinamide, and shea butter, which work together to restore the skin barrier and provide long-lasting hydration. —Corein Carter, Forbes.com, 26 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