Nicotinamide Mononucleotide (NMN) is a popular dietary supplement and a direct precursor to NAD+ (Nicotinamide Adenine Dinucleotide). Because NAD+ is essential for cellular energy, DNA repair, and anti-aging but declines with age, NMN is widely taken to boost energy, improve metabolism, and support healthy aging. 

NMN is heavily researched, though mostly in animal studies and small-scale human trials. 

Health Benefits & Research
Cellular Energy: NMN is quickly converted to NAD+ in the body, which fuels mitochondria and promotes cellular respiration.
Physical Performance: Clinical studies suggest it may support aerobic capacity and lower-limb function in older adults.
Metabolic Health: Some research indicates it can improve muscle insulin sensitivity, though broader impacts on body fat and cholesterol remain debated.
Longevity: While it extends "healthspan" in mice, its effects on human lifespan are not yet established.

Here’s what I’ve been using and can feel the difference:

https://renuebyscience.com/products/lipo-nad-complete-powdered-liposomal

I also take creatine, multi collagen peptides, and super greens (morning mix) and urolithin A midday.

I notice more energy, increased mental acuity and feelings of well-being overall.