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Enhanced Physical Endurance Improves oxygen transport and muscle recovery, which can be especially helpful for active individuals or those beginning a fitness routine

This distinction is critical, as even a biologically promising compound may become clinically harmful when delivered through nonstandardized formulations

When NNMT is highly active, it draws on SAM and can lower available NAD

Methylation Capacity Second, NNMT inhibition affects cellular methylation capacity: SAM is required for hundreds of methyltransferase reactions throughout the cell, and NNMT's consumption of SAM can deplete this critical resource, while the SAH produced by NNMT is a potent product inhibitor of many methyltransferases

Why both matter: purity and identity are not the same measurement