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Twinlab, Niacin ( B-3 ) Caps, 1000 mg, 100 Capsules

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In Stock
  • Expiration Date: Jul 2021
  • Shipping Weight: 1.26 lbs (0.57 kg)
  • Product Code: TWL-00631
  • UPC Code: 027434006316
  • Package Quantity: 100 Capsules
  • Dimensions: 2.7 x 2.7 x 5 in, 0.75 lbs (0.34 kg)
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Product Overview


  • Crystalline Pure
  • Yeast Free
  • Dietary Supplement

Twinlab Niacin (B-3) Caps are easier to swallow and assimilate.

Packaged in a glass bottle for maximum stability, quality and freshness.

This product is manufactured at our own state of the art facility.

Suggested Use

As dietary supplement, take one capsule daily or as directed. For best results, take after meals.

Other Ingredients

Gelatin, purified water, MCT.

Free of the most common allergens such as corn, soy, yeast, rice, barley, wheat, lactose (milk sugar) and all milk, citrus, fish and egg products. No added flavorings, sugars, salt, artificial sweeteners, colorings, preservatives or salicylates.


Niacin may cause flushing, tingling, and skin reddening, particularly on an empty stomach.

Supplement Facts
Serving Size: 1 Capsule
  Amount per Capsule % Daily Value
Niacin 1000 mg 5000%
iHerb Customer Reviews


Posted by 4745828835920541723 on Oct 21, 2016

Got this to help supplement my antidepressants to help me feel better and it is truly working. I would really prefer if they had the 500mg on the site still but this is a great product.

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Hard core

Posted by Reviewer1581820 on Jul 28, 2016

Stick with eating lots of corn and chicken breasts, taking big doses of niacin is a real roller coaster ride, (shocker).

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be careful if you are allergic to B3

Posted by 5459189965242397267 on Feb 23, 2016

Not for me... severe allergic to niacin B3, even on skin application. I blend niacin in moisturizer at 5% only. Have been admitted to emergency twice due to hives

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My Go-to Formula

Posted by 4779905523234241235 on Oct 11, 2015

The flushed skin sensation is something I actually enjoy, and look forward to. It's the very reason I use this form of Niacin – because it dilates the capillaries. And it's the opening-up of those capillaries, which allows increased circulation of nutrients and oxygen. So I take a capsule two or three times a day, depending on the number of meals I eat. I take it with my “Thorne Research Basic Nutrients IV with Copper and Iron,” and other supplements – to insure that my nutrients get delivered to every cell in the body. For that alone – it's worth its weight in gold. But as a bonus, I also find that it's an incredible mood booster, easing the mind and relaxing the lungs – which makes for restful sleep, especially when taken with L-Tryptophan. When I want to rev up my methylation cycle – to increase my cognitive powers, I take a high-dose of methyl-B12 and methyl-folate. When I want to dampen the methylation cycle – for relaxation purposes, this 1000 mg Niacin capsule is my go-to formula.

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Major Flushing

Posted by 5688221554152706857 on Feb 26, 2015

I have taken Niacin 1,000mg twice a day for years and purchased this because it is easier than taking 2 500mg capsules. I did not notice that it was not flush free so that was my bad but wow, the flushing is severe and taking it with food and vitamin C did not help. My cholesterol has always run a bit high because it runs in my family. Niacin definitely helps the ratio of HDL to LDL so it is worth taking but I will be going back to a flush free version immediately! That said, Twinlab makes good products and I trust them...just needed to read the label more carefully so I wanted to do this review to help the next person.

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