SKU: 20492172068

Niacinamide Flush-Free Vitamin B3 - 600 mg, 60 capsules

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Description

Niacinamide Flush-Free Vitamin B3 - 600 mg, 60 capsulesNAD+ Precursor Promotes Cellular Repair, Energy Metabolism and Healthy Skin Helps boost energy levels Supports healthy skin and joints Inhibits free radical formation Supports cognitive function View Certificate of Analysis Research Supported Benefits: Supports Cellular Health. A non flushing form of vitamin B3, niacinamide is an antioxidant and NAD+ precursor that supports DNA repair and sirtuin activation. Niacinamide is an antioxidant, which fights

NAD+ Precursor Promotes Cellular Repair, Energy Metabolism and Healthy Skin

  • Helps boost energy levels
  • Supports healthy skin and joints
  • Inhibits free radical formation
  • Supports cognitive function

View Certificate of Analysis

Research-Supported Benefits:

Supports Cellular Health. A non-flushing form of vitamin B3, niacinamide is an antioxidant and NAD+ precursor that supports DNA repair and sirtuin activation. Niacinamide is an antioxidant, which fights oxidative stress and helps to repair DNA. (1)

Supports Energy Levels. Niacinamide is readily absorbed in the stomach and the small intestine, where it can be subsequently transported to tissues for the synthesis of NAD+ to help produce energy. (2)

Supports Skin Health. Niacinamide supports skin health through its actions as an antioxidant. It also increases the production of skin ceramides—healthy fats that strengthen skin barriers and lock in moisture—and boosts collagen production. (3)

Supports Joint Health. Niacinamide supports a healthier inflammatory response in the joints and boosts collagen production, leading to more flexibility, mobility and comfort. Research shows that adults with joint disorders who took niacinamide for 12 weeks had improved joint health by almost one-third compared to the control group. (4)

Supports Brain Health. Niacin deficiency is known to cause serious brain damage. Research suggests that niacinamide may be beneficial for protecting and supporting brain health and cognitive function with age because it protects against neuron damage and boosts NAD+ levels. (5)

References:

1. Surjana D, Halliday GM, Damian DL. Role of nicotinamide in DNA damage, mutagenesis, and DNA repair. J Nucleic Acids. 2010;2010:157591. Published 2010 Jul 25. doi:10.4061/2010/157591

2. Li F, Chong ZZ, Maiese K. Cell Life versus cell longevity: the mysteries surrounding the NAD+ precursor nicotinamide. Curr Med Chem. 2006;13(8):883-895. doi:10.2174/092986706776361058

3. Bains P, Kaur M, Kaur J, Sharma S. Nicotinamide: Mechanism of action and indications in dermatology. Indian J Dermatol Venereol Leprol. 2018;84(2):234-237. doi:10.4103/ijdvl.IJDVL_286_17

4. Jonas WB, Rapoza CP, Blair WF. The effect of niacinamide on osteoarthritis: a pilot study. Inflamm Res. 1996;45(7):330-334. doi:10.1007/BF02252945

5. Rennie G, Chen AC, Dhillon H, Vardy J, Damian DL. Nicotinamide and neurocognitive function. Nutr Neurosci. 2015;18(5):193-200. doi:10.1179/1476830514Y.0000000112

6. Liu D, Pitta M, Jiang H, et al. Nicotinamide forestalls pathology and cognitive decline in mice: evidence for improved neuronal bioenergetics and autophagy procession. Neurobiol Aging. 2013;34(6):1564-1580. doi:10.1016/j.neurobiolaging.2012.11.020

  • Niacinamide vs. Niacin. Compared to other companies that typically use niacin, ProHealth Longevity uses niacinamide because the body doesn’t have to do extra work to convert niacin into niacinamide.
  • Doesn’t Cause Skin Flushing. Plus, high doses of niacinamide don’t cause skin flushing, like high-dose niacin products tend to do.
  • High Dosage. ProHealth Longevity’s Flush-Free Niacinamide contains 600 mg of niacinamide (as nicotinamide) per serving, which is 3,750% of the Daily Value for niacin. Competitors typically contain 500 mg.
  • Quality Manufacturing Practices. All of our products are manufactured in an FDA-registered, GMP-certified facility.
  • Third-Party Tested in the USA. Every batch is third-party tested in US laboratories to ensure the highest quality, purity and potency. Certificates of Analysis are available.
A non-flushing form of vitamin B3, niacinamide is an antioxidant and NAD+ precursor that supports DNA repair and sirtuin activation.

Additional benefits:
  • Supports the regeneration of beta cells in the pancreas
  • Supports cardiovascular health
  • Important for energy metabolism
  • May support healthy joints and mobility
  • Supports brain health and cognition
  • Supports a healthy inflammatory response
Supplement Facts
Serving Size: 1 Capsule
Servings Per Container: 60
Amount Per Serving %DV
Niacinamide (as Nicotinamide) 600 mg 3750%
Rev. 02.24
  • OTHER INGREDIENTS: Vegetable capsule, stabilized rice bran.
  • DOES NOT CONTAIN: Dairy, egg, soy, wheat, gluten, corn, fish, shellfish, tree nuts, peanuts.
  • SUGGESTED DAILY USE: Take 1 capsule daily, with or without food, preferably in the morning, or as directed by your healthcare professional.
  • CAUTION: Not intended for use if you are pregnant or nursing. Not formulated for use in children. If you have a medical condition or are taking medications, consult with your healthcare professional before using this product.
  • NOTE: Store in a cool, dry place, away from direct sunlight. Do not use if tamper-evident packaging is broken. KEEP OUT OF REACH OF CHILDREN.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 20492172068

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Hugh62
Massapequa, US
★★★★★ 1
Poor quality control - maybe outlet store leftovers
Size: 11.5, Color: Burgundy Polished Full Grain
The two shoes were not the same size. They were both labeled 11 1/2 but one shoe was larger than the other and the fit was poor. I returned the first pair and ordered a replacement. This time the shoes were close to the same size but too loose and the left one has sewing issues. I've bought Johnston & Murphy for years because of the quality. These were to replace an existing pair of burgundy penny loafers that have finally worn out (even after several heal/sole replacements). That is the expected quality. I suspect Nashville Shoe Warehouse may be handling shoes that didn't measure up for the quality; more like an outlet mall than getting the J&M quality I've come to expect. Update: went to Johnston & Murphy site to buy "direct" from the manufacturer. There were several recent reviews where the shoes were long and didn't fit properly. Genesco - please step up the manufacture / crafting of these classic shoes to the level of quality they used to have.
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Reviewed in the United States on July 21, 2025
F
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Fabric Crazy
Birmingham, US
★★★★★ 5
Really nice shoes
Size: 9, Color: Black Polished Full Grain
My husband enjoys wearing these shoes. Very classy looking. They fit well. They arrived quickly. He liked them so much he ordered another pair in a different color which have worked out just as well.
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Reviewed in the United States on February 3, 2026
T
Verified Purchase
tjw
Grantham, US
★★★★★ 3
Way too narrow
Size: 9.5 Wide, Color: Burgundy Polished Full Grain
I ordered a wide in this shoe, but it was still way too narrow. I had to return them. Otherwise, it looked like a nice quality shoe.
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Reviewed in the United States on February 12, 2026
B
Verified Purchase
BetterEveryDay
Natrona Heights, US
★★★★★ 5
I usually wear 11.5's, but I buy 1/2 size smaller to accommodate for stretch. Leather relaxes.
Size: 11, Color: Burgundy Polished Full Grain
5 STARS: These shoes are awesome. I keep coming back for more. I have major foot problems, have tried all kinds of shoes, orthotics, and inserts... but believe it or not, these shoes work better than any of that stuff. I wear them daily. I buy lots of them, for home, for church, and I'm getting my first pair of J&M boots today, for winters in Indiana... Brrrr
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Reviewed in the United States on December 18, 2025
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Animatus
Chelsea, US
★★★★★ 5
Great upgrade compared to others
Color: Rechargeable with Storage Stand and Box - Black
This frother is far superior to other hand held versions we’ve owned. The attachments are much sturdier and don’t bend as easily (which made the others we’ve purchased quite useless). Rechargeable battery seems to last longer and provides plenty of power even on the lowest setting. The little wisk easily whips up eggs for a morning omelette and frothing cream and mixing powder into drinks are super easy with the other attachments. Finally, the stand is actually sturdy and balanced enough that it doesn’t easily tip over.
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Reviewed in the United States on May 4, 2026

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