MECHANISM OF ACTION
NMN is one step away from NAD⁺ in the body's production chain. Think of it as the raw material that cells use to make NAD⁺. When you take NMN, your cells convert it into NAD⁺, which then powers energy production, DNA repair, and the longevity proteins called sirtuins. Oral NMN has been tested in human clinical trials, one study at Washington University showed it improved how well muscle cells respond to insulin (which controls blood sugar) in women after menopause. Another showed measurable NAD⁺ increases in the blood within a few hours of a single dose. Injectable NMN raises NAD⁺ faster than oral forms because it skips the digestive process entirely.
RESEARCH APPLICATIONS
- NAD⁺ repletion - oral and injectable formats
- Skeletal muscle insulin sensitivity (Washington University clinical data)
- Aerobic capacity and exercise performance
- Anti-ageing sirtuin activation
- Combination with NR, resveratrol, or direct NAD⁺ for longevity stacks
RESEARCH HIGHLIGHTS
Human Clinical Trial: Muscle Insulin Sensitivity
2021RCT (n=25) showed 10-week oral NMN improved skeletal muscle insulin sensitivity and improved glucose uptake vs. placebo in postmenopausal women with overweight.
Ref: Yoshino et al., Science
NAD⁺ Elevation Confirmed in Humans
2020Single-dose NMN (100/250/500mg oral) produced dose-dependent blood NAD⁺ elevation within 2–3 hours in healthy volunteers, with 500mg producing ~2× baseline.
Ref: Irie et al., NPJ Aging
RESEARCH PROTOCOL NOTES
Chemical Identity
Storage & Stability
Powder/lyophilised: cool, dry, dark environment. Sensitive to oxidation and humidity. Injectable: 2–8°C, protect from light. Less stable than NAD⁺ direct in solution.
Regulatory Status
Sold as supplement in most countries. Injectable/research-grade = research compound. Not WADA prohibited. SA: supplement market unregulated; injectable format = research compound.