Understanding NAD+ Dosing in Research
NAD+ (nicotinamide adenine dinucleotide) is an essential coenzyme present in every cell, serving as a critical electron carrier in mitochondrial energy production and as a substrate for enzymes like sirtuins and PARPs that regulate DNA repair, gene expression, and cellular aging. NAD+ levels naturally decline with age, making supplementation and restoration a major focus of longevity research.
Mechanism of Action
NAD+ functions through multiple pathways: it is a required substrate for sirtuin enzymes (SIRT1-7) that regulate epigenetic modification and mitochondrial function; it serves as a substrate for poly(ADP-ribose) polymerases (PARPs) involved in DNA damage repair; and it functions as an electron carrier in mitochondrial oxidative phosphorylation (Complex I, Complex III).
Research Dosing Protocols
Subcutaneous Protocol
- Dose: 50-200mg per administration
- Frequency: 1-3 times weekly
- Administration: Subcutaneous injection
- Duration: 4-12 weeks in research cycles
Intravenous Protocol (Clinical Research)
- Dose: 250-1000mg per session
- Frequency: 1-2 times weekly in loading phase, then biweekly
- Infusion rate: Slow IV over 2-4 hours (rapid infusion causes discomfort)
- Duration: Variable based on research endpoints
NAD+ vs Precursors (NMN, NR)
Research compares direct NAD+ administration with its precursors nicotinamide mononucleotide (NMN) and nicotinamide riboside (NR). Direct NAD+ provides immediate bioavailability but requires injection due to poor oral absorption. NMN and NR can be taken orally but require enzymatic conversion to NAD+ in the body. The optimal approach remains an active area of research.
Dose-Response Research
Clinical research has shown that IV NAD+ infusion produces rapid, dose-dependent increases in intracellular NAD+ levels. Subcutaneous administration achieves similar steady-state levels with more convenient dosing schedules. Research subjects typically report dose-dependent effects on energy metabolism markers and mitochondrial function parameters.
Reconstitution
NAD+ for research is supplied as a lyophilized powder. Reconstitute with bacteriostatic water for subcutaneous administration. NAD+ is highly soluble in water. See our reconstitution guide.
Storage
Store lyophilized NAD+ at -20°C to 4°C, protected from light. NAD+ is sensitive to pH, heat, and UV light. Reconstituted solution at 2-8°C, use within 1-2 weeks. See storage guide.
For research and educational purposes only. NAD+ is sold for research use only. Visit COAs for purity verification. See our full catalog for available research compounds.