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Source Naturals, Niacinamide, B-3, Timed Release, 1,500 mg, 100 Tablets

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In Stock
  • Expiration Date: Aug 2020
  • Shipping Weight: 0.53 lbs (0.24 kg)
  • Product Code: SNS-00506
  • UPC Code: 021078005063
  • Package Quantity: 100 Tablets
  • Dimensions: 2.6 x 2.6 x 5 in, 0.45 lbs (0.2 kg)
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Product Overview


  • Vitamin Supplement

Niacinamide, also known as vitamin B-3, functions in over 50 metabolic reactions, most of which are enzymatic. Its bioactive forms - NAD+, NADH, NADP, and NADPH - play important roles as catalysts in the energy production process in the cells, the breakdown of proteins and fatty acids, the synthesis of fatty acids, and the formation of steroid hormones and red blood cells. Source Naturals Niacinamide is prepared to provide a gradual release over a prolonged period of time.

Suggested Use

1 tablet daily.

Other Ingredients

Stearic acid, modified cellulose gum, and magnesium stearate.

Suitable for vegetarians and Hypoallergenic: contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.


Note: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.

Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children.

< td colspan="3">Supplement Facts
Serving Size: 1 Tablet
  Amount Per Serving %DV
Niacinamide 1,500 mg 7,500%
iHerb Customer Reviews

Wonderful product

Posted by 4936668960411736171 on Dec 01, 2016

We have been taking this product for over 1 year. I had heard that it helps with arthritis pain. We have seen a HUGE decrease in arthritic pain since we started taking this. It does take about a month to see a difference, but its worth the wait. I will never be without it.

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Gigantic horse pills

Posted by 5753436652077568681 on Nov 11, 2016

These are the largest pills I've ever tried to swallow. Even cut in half, they are too big. I'm going to have to crush them up and put them on applesauce or something. I would recommend the 750mg instead, hoping that they are at least a bit smaller. I can't even report how they make me feel because I've only been able to get three halves down in the past week.

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great product

Posted by 5126157344644946774 on Oct 16, 2016

My husband takes it, not me. It seems to be keeping his mental state much better.

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This review has great features

Posted by 5572469561702045821 on Jul 05, 2016

I feel really confident with this B3

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Niacinamide B3

Posted by Reviewer1313067 on Sep 02, 2015

Taking half tablet with breakfast seems to help our old knees - taken with a multi-vitamin.

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