Vitamin B3 (Niacin or PP)


Two related substances possess the biological activity of niacin: nicotinic acid and nicotinamide, nicotinic acid amide. There is no absolute requirement for dietary intake of nicotinic acid or nicotinamide nitibamide preformed as can be synthesized from tryptophan, an essential amino acid.

Niacin, which is abundant in meat products is not affected by the various technological processes (cooking, storage ...) suffered food. In cereals, 30% of the niacin content is not bioavailable.

Sources of Vitamin B3 (Niacin)

See the list of foods that provide the most vitamin B3


The 100% value in the RNI Nutrimeter ® is 14 mg per day for an adult male and 11 mg per day for an adult woman.

Nicotinic acid, in contrast to nicotinamide causes cutaneous vasodilation at a dose as low as 100 mg. Ingestion of doses greater than or equal to 750 mg has toxic effects on many organs including the liver. The safety limit was set at 33 mg per day in addition to the current food intake (we will limit this value to 400% in the Nutrimeter ®).

(Source: "Recommended dietary allowances for the French population," the CNERNA-CNRS. Edition coordinated by Ambroise Martin.)