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Vitamin B3 Niacin

500 mg, 100 capsules
Item# 00372


Vitamin B3 Niacin

Supports cell energy & already-healthy cholesterol levels

500 mg, 100 capsules
Item# 00372


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

Niacin is called “B3” because it was the third B vitamin to be discovered. Supplementing with niacin can help people maintain already-healthy cholesterol levels, an attribute identified way back in the 1950s. This makes it one of the most-studied nutrients for this purpose. No wonder Vitamin B3 Niacin is our best-selling supplement for cholesterol support!

Benefits at a Glance

  • Helps maintain already-healthy cholesterol levels
  • Helps metabolize glucose, fat & alcohol
  • Promotes cellular energy production
  • Our best-selling supplement for cholesterol support

More facts about Vitamin B3 Niacin

Niacin is a water-soluble nutrient crucial to energy transfer reactions, particularly the ones that help your body metabolize glucose (sugar), fat and alcohol.1,2 Niacin also helps metabolize the foods you eat and, like many B vitamins, promotes healthy cellular energy production.

Health benefits of B3 niacin

Cholesterol—Niacin has beneficial effects on blood lipids, helping to maintain healthy cholesterol levels already within normal range.3-7

Cellular energy—Vitamin B coenzymes (such as niacin) are crucial to the metabolic pathways that generate cellular energy.

Metabolism—Vitamin B3 is required for the body to utilize dietary fats and carbohydrates, and to metabolize alcohol.

Those seeking to utilize niacin’s ability to help maintain already-normal cholesterol levels should start with 500 mg a day, gradually increasing their dose to between 2 and 3 grams a day.1 Be aware: niacin supplementation can cause temporary flushing, itching, rash or gastric disturbances. 

Each capsule of Life Extension® Vitamin B3 Niacin delivers 500 mg of this vital nutrient. Support healthy cellular energy, maintain cholesterol already within normal range, and promote healthy fat, carbohydrate, and alcohol metabolism with Vitamin B3 Niacin.

These statements have not been evaluated by the Food and Drug Administration.
These products are not intended to diagnose, treat, cure, or prevent any disease.

  1. Accessed 02/25/2019.
  2. Clin Liver Dis. 2012 Nov; 16(4): 667–685.
  3. . Journal of Clinical Lipidology (2017) 11, 1309–1317.
  4. Clin Nutr. 2015 Oct;34(5):838-44.
  5. Can J Physiol Pharmacol. 2015 Dec;93(12):1043-54.
  6. Curr Med Chem. 2016;23(25):2826-2835.
  7. Metabolism. 2016 Nov;65(11):1664-1678.


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.



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