Nicotinamide mononucleotide (NMN) is a precursor to NAD+, a molecule essential to many biological functions, such as immunity and metabolism. It also has positive effects on eye and bone health, and insulin sensitivity.

NMN has been investigated for its ability to combat the effects of aging, as well as for its ability to help the body fight cardiovascular disease. A Harvard University study found that supplementation with NMN reversed biochemical aspects of aging in mice.

Studies have been conducted on NMN in other animals, but its potential for humans has yet to be fully explored. However, researchers believe that NMN may be a key to restoring NAD+ levels in humans.

While studies have shown that NMN can prevent age-related declines in mice, it has yet to show any benefits in humans. Nevertheless, NMN supplements are gaining traction. Many brands claim to keep you younger and healthier for longer. But before you buy, it is important to check the quality of each product.

For example, a recent study by Consumer Lab shows that the quality of NMN products sold on Amazon varies greatly. Of the 21 NMN brands it tested, only three contained the claimed amounts of NMN. The remaining 14 contained less than 1% of the amount claiming.

As with any supplement, it is important to check the quality of any NMN Amazon product. If you find that a product contains less than 1% of the amount claimed, you should think twice before purchasing.