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Natural Factors, Niacin, 100 mg, 90 Tablets

By Natural Factors

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In Stock
  • Product Code: NFS-01220
  • UPC Code: 068958012209
  • Package Quantity: 90 Tablets
  • Dimensions: 2 x 2 x 3.7 in, 0.1 lbs (0.05 kg)
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Product Overview

  • Dietary Supplement
  • Support For Energy Production, Protein Metabolism, Nerves & Circulation
  • Purity & Potency Guaranteed

Niacin is necessary for protein metabolism, energy production and normal nervous system function. It may also help regulate blood sugar, cholesterol levels and is required for the production of the adrenal and sex hormones. Niacin has a strong effect on the circulatory system causing some people to experience flushing, a sensation of heat and reddening. With today's lifestyle, it is often difficult to get proper nutrition, making Natural Factors Niacin tablets your nutritional insurance to fortify your daily diet.

All Natural Factors products are manufactured in accordance with the Government of Canada's Good Manufacturing Practices (GMP), among the highest standards in the world.

Suggested Use

1 tablet, 1-5 times per day, or as directed by a health professional.

Other Ingredients


Contains no artificial preservatives, color or sweeteners; no corn, dairy, soy, starch, wheat or yeast.


Keep out of reach of children.

In case of history of ulcer, gallbladder or liver disease, consult a physician.

Sealed for your protection. Do not use if seal is broken. For freshness store in a cool, dry place.

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Supplement Facts
Serving Size: 1 Tablet
  Amount Per Serving % Daily Value
Niacin (Vitamin B3) 100 mg 500%**
** Percent Daily Value is based on a 2,000 calorie diet.

iHerb Customer Reviews

5 Stars
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1 Stars

Thank you Natural Factors - no unnecessary fillers or ingredients

Posted by Health-Is-Wealth on Oct 24, 2013

Effective! I've started to look at Natural Factors more and more - often good value and/or don't contain lots of unnecessary junk. These tablets are small and well utilised - can easily be cut in half if needed (e.g. to avoid a niacin flush) and hold together well. Would prefer a 50mg tablet. Recommend. If this review was helpful to you, please click YES below - thank you. For reviews of all the products I have purchased from iHerb, please click my username above.

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13 people found the following review helpful

hard to find!

Posted by Reviewer1048198 on Aug 19, 2008

I have been using this for some time after reading Andrew Saul's Doctor Yourself books. I have to split them in half to not get an overwhelming niacin flush reaction. But it's a good way to see if you're short niacin or not. No flush, you're short, take more later. Flush, you're doing fine. It's a good buy, too!

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11 people found the following review helpful

pure natural niacin

Posted by Reviewer1381105 on Sep 14, 2009

No fillers - excellent product

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4 people found the following review helpful


Posted by Reviewer2101340 on Feb 09, 2010

Excellent price, good dosage amount, ingredient is only Niacin, which is difficult to find.

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3 people found the following review helpful

Just experienced my first flush

Posted by Reviewer2329940 on Oct 11, 2011

I started taking these about a week ago, and had not experienced any flushing until about three days ago...I work in a very cold office :( so the flushing was a welcomed feeling.

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3 people found the following review helpful

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