NMN is one of the primary precursors of NAD and intermediaries in NAD biosynthesis. As the mature coenzyme, NAD can be utilized directly by cell and then participate in the most of biological reaction, but NMN has to become to NAD to play role through conversion of special enzyme (such as the enzyme-NMNAT)which are in cell.
Regarding effects of supplment, take NDA directly will facing hallenges of low level of Absorptance and biological availability , but NMN allowing rapid penetration of cell membranes after taken orally because of low MW and good stability and then play role in cell, improve NAD level in human body with efficiently. So NMN has large application potential in aspect of anti-aging, strengthen physical health & promote metabolism and so on.
