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.In its coenzyme forms, niacin is crucial to energy transfer reactions, particularly the metabolism of glucose, fat, and alcohol. Niacin’s beneficial effects on blood lipids is well-documented.
Note:Niacinamide is another B3 vitamin that does not cause flushing.
Serving Size
1 Capsule, 100 servings per container
Other Ingredients
gelatin, vegetable stearate.
Suggested Use
Take one capsule daily with meals, or as recommended by a healthcare practitioner.
Does Not Contain
This product contains NO milk, egg, fish, peanuts, crustacean shellfish (lobster, crab, shrimp), soybeans, tree nuts, wheat, yeast, gluten, corn, or rice. Contains NO sugar, and no artificial sweeteners, flavors, colors, or preservatives.
Warnings/Cautions
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.
Keep out of reach of children.
Do not exceed recommended dose.
Do not purchase if outer seal is broken or damaged.
When using nutritional supplements, please consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.
Supplement Facts
Serving Size is 1 Capsule*Daily Value (DV) not established.
Write a Review
Have you tried Life Extension Vitamin B3 Niacin 500mg? Share your experience with others; Review this product here!
Free Shipping over $49.*
1 800 919 9122
Live Chat
We Accecpt Visa, MasterCard, American Express and Discover
WebVitamins is a Proud Member of the National Nutritional Foods Association