NAD+ is not a peptide, the phrase NAD peptide is a marketing label rather than a molecule, and the two therapies are built for different jobs: NAD+ as a systemic energy and repair foundation, peptides as targeted signals for repair, skin quality, and recovery
Some preclinical studies have explored DSIP in pain pathway models, investigating its interaction with opioid receptor systems and examining behavioral pain measures in animal subjects under controlled research conditions
This observation further indicates the functional significance of proteolytic cleavage in c-MET activation
Likewise, aqueous compatibility and gastric-juice-related stability descriptions can support use in experimental systems, but they do not by themselves establish therapeutic potential
Thats why so many people take supplements for months and still feel tired or off-balance
Most research to date is in animal models