What does niacinamide mean?
Niacinamide is a water-soluble form of vitamin B3 chemically known as nicotinamide. It occurs in food and is also produced by the body from niacin, the form of vitamin B3 known as nicotinic acid. Niacinamide is used both as a nutritional supplement and as a topical ingredient in skin-care products, where it is valued for its presence in formulations intended to support the skin barrier and improve the appearance of uneven tone or enlarged pores. In nutrition and medicine, the term is chiefly technical and refers to a specific chemical compound rather than vitamin B3 in all its forms. British and American English both use the word, although nicotinamide is particularly common in scientific and pharmaceutical contexts in Britain. The name may cause confusion with niacin, but the substances are related yet distinct: niacinamide lacks the acidic group that characterizes niacin. A familiarity with the distinction is useful when reading supplement labels, clinical guidance, and cosmetic ingredient lists.
nounA water-soluble form of vitamin B3, chemically known as nicotinamide, that occurs in food and can also be produced by the body from niacin. It is used in nutritional supplements and topical skin-care formulations.
- The chemical compound nicotinamide, a form of vitamin B3 used in nutrition, medicine, and cosmetics.
"The serum contains 10% niacinamide to help improve the appearance of uneven skin tone."
"The pharmacist explained that the supplement contains niacinamide rather than niacin."
"Her skincare routine included a niacinamide serum formulated for sensitive skin."
The singular mass noun is standard. The plural is uncommon and may refer to multiple products, preparations, or compounds containing the compound.
"Several niacinamides were compared for stability under different storage conditions."
Niacinamide is vitamin B3's less famous alter ego—related to niacin, but without niacin's familiar high-dose flush.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does niacinamide come from?
The name niacinamide was formed in scientific English from niacin and the chemical suffix -amide, identifying the compound as an amide related to niacin. Earlier literature commonly used the systematic name nicotinamide, derived from nicotinic acid; both names denote the same compound and became established in nutritional and biochemical writing. The shared nicotin- terminology also connects niacin, nicotinic, and nicotine, although nicotinamide is chemically named for nicotinic acid rather than for nicotine.
How niacinamide is actually used
This is primarily a technical noun used in scientific, pharmaceutical, nutritional, and cosmetic contexts. It is normally treated as a mass noun; in British English, the alternative name nicotinamide is particularly common in formal and scientific usage.
Easily confused with niacinamide
Niacin is nicotinic acid, whereas niacinamide is its amide derivative; both are forms of vitamin B3.