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 ReviveRX Cream is an anti-aging treatment that combines 10% azelaic acid, 4% niacinamide, and tretinoin (strengths vary, depending on prescribed treatment). —Jessie Quinn, StyleCaster, 10 Oct. 2025

This milky rice toner also includes niacinamide for oil control, acne fighting, and brightening. —Conçetta Ciarlo, Vogue, 8 Oct. 2025

The formula blends barrier-repairing ceramides, moisture-boosting hyaluronic acid, and soothing niacinamide to calm the scalp, banish flakes, and lock in hydration. —Annie Blackman, Allure, 7 Oct. 2025

The latter is formulated with salicylic acid, niacinamide, vitamin C, and hyaluronic acid to help flatten and soothe blemishes fast. —Melanie Fincher, Southern Living, 6 Oct. 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