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

Then, the snowball of niacinamide, snail mucin, retinol, –nal and –noid, not to mention the incredible things coming out of research and development hubs in Japan and Korea. —Morgan Fargo, Vogue, 22 Dec. 2025

This Korean face mask is packed with collagen (to soften lines), hyaluronic acid (to hydrate), and niacinamide (to even out skin tone and discoloration). —Alanna Martine Kilkeary, Glamour, 22 Dec. 2025

Supporting ingredients like niacinamide, glycerin, salicylic acid, and menthol help calm itch, loosen buildup, and leave the scalp feeling refreshed. —Allure, 18 Dec. 2025

Over-the-counter products containing vitamin C serums, azelaic acid, or niacinamide (vitamin B3) may help address pigmentation. —Sherri Gordon, Parents, 18 Dec. 2025

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