NAD+

This essential coenzyme has caught researchers' attention as a potential anti-aging intervention, despite not actually being a peptide. NAD+ drives fundamental cellular processes that deteriorate with age, making it a target for longevity studies. Injectable formulations have emerged from peptide vendors to circumvent the poor oral absorption that limits supplementation effectiveness.

NAD+ functions as a crucial helper molecule that mitochondria need to convert nutrients into cellular energy, while also powering enzymes called sirtuins that regulate aging processes and DNA repair systems. Think of it as both the fuel delivery system and the maintenance crew for your cells - when NAD+ levels drop with age, energy production falters and cellular repair mechanisms slow down.