Vitamin B3 Niacin

500 mg, 100 capsules, Item# 00372

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  • Vitamin B3 Niacin
  • 500 mg, 100 capsules
  • Item Catalog Number: 00372

Many B vitamins are used in the body individually or in combination with enzymes to help release energy from carbohydrates, fat, and protein. Vitamin B coenzymes are crucial to the metabolic pathways that generate the energy needed by every cell in the body. Because they are codependent in their metabolic activities, a deficiency of one B vitamin can affect optimal functioning of organ systems throughout the body.170

Niacin is the only B vitamin that can be synthesized in the liver from the amino acid tryptophan — on average, 1 mg of niacin can be synthesized from the ingestion of 60 mg of tryptophan.198-200 In its coenzyme forms, niacin is crucial to energy transfer reactions, particularly the metabolism of glucose, fat, and alcohol.201,202 Niacin’s beneficial effects on blood lipids is well-documented.203-215

Supplement Facts

Serving Size 1 capsule

Amount Per Serving

Niacin (vitamin B3)

500 mg

Other ingredients: gelatin, vegetable stearate.

Dosage and Use
  • Take one (1) capsule daily with meals, or as recommended by a healthcare practitioner.

Temporary flushing, itching, rash or gastric disturbances may occur. Liver function testing is recommended when niacin is taken in excess of 500 mg daily. Those with gout or liver diseases should avoid taking high doses of niacin.


Niacinamide is another B3 vitamin that does not cause flushing.