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Source Naturals, Niacin, 100 mg, 250 Tablets

$8.09 $8.09 (Saved $6.41)

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Source Naturals, Niacin, 100 mg, 250 Tablets

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Source Naturals, Niacin, 100 mg, 250 Tablets

In Stock
  • Expiration Date: Jul 2021
  • Shipping Weight:
    0.24 lbs
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  • Product Code: SNS-00502
  • UPC Code: 021078005025
  • Package Quantity: 250 Tablets
  • Dimensions:
    1.8 x 1.8 x 3.3 in, 0.2 lbs
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Product Overview


  • Dietary Supplement
  • Vitamin B-3

Niacin plays an essential role in the activities of various enzymes involved in the metabolism of carbohydrates and fats, the functioning of the nervous and digestive systems, the manufacturing of sex hormones, and the maintenance of healthy skin.

Suggested Use

1 tablet daily. Please see Note before using.

Other Ingredients

Microcrystalline cellulose, dibasic calcium phosphate, stearic acid, colloidal silicon dioxide, 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.


Caution: If you are pregnant, may become pregnant, or breastfeeding, or you have diabetes, liver dysfunction or ulcers, consult your health care professional before using this product.

Note: Niacin may cause temporary flushing, tingling, skin reddening and sensations of heat, especially if taken on an empty stomach. This is a natural and harmless reaction.

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

Supplement Facts
Serving Size: 1 Tablet
  Amount Per Serving %DV
Niacin 100 mg 500%
Calcium 21 mg 2%
iHerb Customer Reviews

Finally got things done

Posted by iHerb Customer on Sep 15, 2017 | Verified Purchase

I've been struggling with depression, fatigue and panic disorder since early youth, and procrastination and lack of energy has been my best friends for years. After a day at work and walking my dog, there simply wouldn't be any energy mentally or physically to do cleaning or things I'd postponed for weeks. I then would get so sad that I was unable to do the things I wanted to, that the depressive thoughts made it impossible. Starting with 25 mgs a meal and gradually increasing (wouldn't want a bad flushing experience the first time because of my anxiety) this has made a HUGE difference. I've always taking the most basic supplements and been eating healthy, and never really felt that it would make any noticeable differences at all what I took/ate. But this stuff gave me a lift in my energylevels and removed my most depressive thinking/mood (without in no way working as a anti-depressant, I'm still feeling). Excited to see if it will last and how it will work to further increase the dosage as I'm now on just 200 mg pr day (but still is a "high" dosage according to the recommended daily intake in Norway which is at 16 mg for women my age).

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Use this everyday

Posted by iHerb Customer on Jul 27, 2017 | Verified Purchase

Use this everyday and so does my wife....helps maintain a steady emotional state....and believe it keeps my blood pressure in the normal range

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Great product

Posted by iHerb Customer on May 11, 2017 | Verified Purchase

I love this I am using it to help lower my numbers will have rechecked in a couple of months

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Wish it has an indent in the middle

Posted by iHerb Customer on Feb 22, 2017 | Verified Purchase

Some brands of niacin have a slight under in the middle so you know exactly where to split it if you want a smaller dose. This didn't. But I was still able to cut the tablet easily enough. Very effective. Helped with improving my 11 year old grandson's mood. The flush is manageable. My daughter even enjoys it!

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Niacin good for your mood

Posted by iHerb Customer on Oct 19, 2016 | Verified Purchase

After reading about niacin and its impact on arthritis, mental health issues etc. (See Andrew Saul - niacin), we are finding some wonderful improvements in our health and mood since starting to take megadoses of niacin. Since niacin will help with circulation you should expect to feel a flushing hot sensation that does not last for very long (up to 45 minutes) and this may be accompanied by itchy skin during the flush.

Thanks for your feedback!