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Answer:

Nicotinamide riboside (sold as Niagen and Niacel) is a form of vitamin B3 (niacin) that has been promoted as having anti-aging effects, such as boosting energy, increasing physical performance, improving cognitive function, and improving cholesterol levels — without causing flushing. In addition, it has been promoted for raising levels of NAD+ (needed for energy production in cells) that supposedly declines with age. However, the evidence for these uses appears to be very preliminary and may be theoretically incorrect, as discussed in the "Niacin" section of the B Vitamin Supplements Review. In fact, the maker of Niagen has been challenged over some of its claims. There is also theoretical concern that compounds that raise NAD+ levels could also stimulate the growth of existing cancers.

Like supplements containing Niagen and Niacel, the supplement Basis (Elysium Health) includes 250 mg of nicotinamide riboside per recommended daily serving (typically two capsules) but also contains 50 mg of pterostilbene. Details about our laboratory tests of Basis and a clinical study investigating the effects of this supplement can be found, respectively, in the "What CL Found" and "Niacin" sections of the B Vitamin Supplements Review >>

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CHRISTOPHER22918
July 14, 2021

I had become interested in NAD for the past few years but was concerned with the side affects. Coincidentally I read this article a few weeks ago that now the U.S. Military is testing it on soldiers. It would be interesting what the outcome of this study reveals, however it might not be applicable for those with mobilities. Hopefully Comsumer Labs can keep tabs on this study if it wasn't yet mentioned in the latest "B-Vitamin Review" : https://news.yahoo.com/u-military-testing-pill-could-182200267.html

ConsumerLab.com
July 14, 2021

For information about the clinical evidence for nicotinamide riboside, safety and side effects, please see the Niacin section of the B Vitamin Supplements Review https://www.consumerlab.com/reviews/review-best-b-vitamins-and-complexes-energy-b6-b12-biotin-niacin-folic-acid/bvitamins/#niagen.

Michael 6889
July 31, 2015

Which inositol products are best?

ConsumerLab.com
July 31, 2015

Hi Michael - Please see our tests of B complex supplements which contain inositol (you will see inositol listed within the second column of the results table): https://www.consumerlab.com/reviews/review-best-b-vitamins-and-complexes-energy-b6-b12-biotin-niacin-folic-acid/bvitamins/#results. We have not tested inositol-only supplements.

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