NAD+ (Nicotinamide Adenine Dinucleotide) is a naturally occurring coenzyme found in every living cell. Rather than acting as a signalling peptide or hormone, NAD+ functions as an essential electron carrier in hundreds of metabolic reactions, playing a central role in ATP production, mitochondrial function and cellular repair.

Because NAD+ levels naturally decline with age and metabolic stress, it has become one of the most extensively investigated molecules in research on aging, energy metabolism and mitochondrial biology.

Why NAD+ is widely investigated

Published research has investigated NAD+ in relation to:

cellular energy production
mitochondrial function
healthy aging
DNA repair
oxidative stress
metabolic health
cognitive function
muscle physiology
sirtuin biology

Unlike mitochondrial peptides, NAD+ serves as a fundamental metabolic cofactor required for normal cellular function across virtually every tissue.

How NAD+ works

Cellular energy production

NAD+ plays a central role in converting nutrients into usable cellular energy. It transfers electrons during glycolysis, the citric acid cycle and oxidative phosphorylation, allowing mitochondria to generate ATP efficiently.

Mitochondrial function

Healthy mitochondria depend on adequate NAD+ availability to support normal energy metabolism. Research has investigated how declining NAD+ levels influence mitochondrial performance during aging and metabolic stress.

DNA repair

NAD+ serves as an essential substrate for enzymes involved in DNA repair, including PARPs, which respond to DNA damage by helping maintain genomic stability.

Sirtuin activation

NAD+ is also required by sirtuins, a family of enzymes involved in cellular stress responses, metabolism and healthy aging. This relationship has made NAD+ a central focus of longevity research.

Why NAD+ is different from mitochondrial peptides

Although frequently discussed together, NAD+, SS-31 and MOTS-c investigate different aspects of mitochondrial biology.

NAD+ supplies an essential coenzyme required for cellular energy metabolism.
SS-31 investigates mitochondrial membrane integrity and ATP production.
MOTS-c studies metabolic signalling and adaptive cellular responses.

Together, these represent complementary areas of cellular energy research rather than competing mechanisms.

Human and preclinical research

NAD+ has been investigated extensively in both laboratory and clinical settings.

Current research explores its role in aging, metabolic disorders, neurodegeneration, cardiovascular physiology and mitochondrial disease. Much of this work also focuses on strategies to increase intracellular NAD+ through precursors such as NMN and nicotinamide riboside, reflecting the importance of NAD+ homeostasis in human physiology.

Although the biological importance of NAD+ is well established, many therapeutic applications remain under active investigation.

Published safety observations

As a naturally occurring cellular coenzyme, NAD+ has been the subject of extensive biological research.

Clinical investigations have generally reported favourable tolerability across a range of study designs, although research continues to evaluate optimal delivery methods, pharmacokinetics and potential applications in age-related disease.

Product characteristics

Application: laboratory and analytical research
Use restriction: not for human consumption; not for medical, veterinary or cosmetic use
Produced in GMP-compliant facilities under strict QC protocols.
Each batch carefully lab tested after production (you can find Certificate of Analysis under product pictures).
Freeze-dried (lyophilized) for maximum stability and extended shelf life.
Sealed in sterile vials, ready for reconstitution.
Purity: ≥ 99.47% , HPLC tested
Appearance: white lyophilized powder
Molecular formula: C₂₁H₂₉N₇O₁₄P₂²⁺
Molecular weight: 665.4

Storage: unopened lyophilized vials are best stored refrigerated at 2–8°C, which is the storage method confirmed by our manufacturing partner and suitable for up to 24 months. Refrigeration is preferred because it minimizes unnecessary freeze–thaw cycles during routine handling. If substantially longer-term storage is required, unopened lyophilized vials may also be kept frozen. Once reconstituted, always store at 2–8°C and do not freeze.

Reconstitution and handling

NAD+ is supplied as a lyophilised vial and should be handled using standard peptide reconstitution procedures appropriate to the research setting. Must be reconstituted with bacteriostatic water before use. To help preserve structural integrity, add the chosen solvent slowly against the inside wall of the vial rather than directly onto the peptide cake, and avoid vigorous shaking. Gentle swirling is generally sufficient once the peptide has fully dissolved. Standard laboratory practice also includes allowing refrigerated vials to reach room temperature before reconstitution to minimise condensation inside the vial.

For other solvent selection, concentration planning and storage guidance, see the full Peptide Reconstitution Guide and Reconstitution Calculator.

Selected research references

Covarrubias AJ, Perrone R, Grozio A, Verdin E. NAD+ Metabolism and Its Roles in Cellular Processes During Ageing, Nature Reviews Molecular Cell Biology, 2021.

A comprehensive review of NAD+ biology, aging, metabolism and mitochondrial function.

Yoshino J, Baur JA, Imai SI. NAD+ Intermediates: The Biology and Therapeutic Potential of NMN and Nicotinamide Riboside, Cell Metabolism, 2018.

A landmark review summarising NAD+ metabolism and strategies for restoring intracellular NAD+.

Rajman L, Chwalek K, Sinclair DA. Therapeutic Potential of NAD+ Boosting Molecules, Nature Reviews Drug Discovery, 2018.

A detailed overview of NAD+ biology and current therapeutic research.

Frequently Asked Questions

What is NAD+?

NAD+ (Nicotinamide Adenine Dinucleotide) is a naturally occurring coenzyme essential for cellular energy production, mitochondrial function and DNA repair.

Is NAD+ a peptide?

No. NAD+ is not a peptide. It is a naturally occurring coenzyme found in every living cell and plays a central role in energy metabolism.

Why is NAD+ important for mitochondria?

NAD+ acts as an electron carrier during cellular respiration, allowing mitochondria to produce ATP efficiently and maintain normal energy metabolism.

How is NAD+ different from MOTS-c?

Although both investigate mitochondrial biology, NAD+ functions as an essential metabolic coenzyme, whereas MOTS-c acts as a mitochondrial signalling peptide that regulates cellular metabolism.

How is NAD+ different from SS-31?

SS-31 investigates the structural integrity of mitochondria by targeting the inner mitochondrial membrane, while NAD+ serves as a fundamental coenzyme required for cellular energy production.

Is this product intended for human use?

No. NAD+ supplied by LIFE Peptide is intended strictly for laboratory and analytical research. It is not intended for human consumption, diagnosis, treatment or prevention of disease.

Related research context

NAD+ is frequently discussed alongside other research compounds investigating cellular energy, mitochondrial biology and healthy aging, although each targets distinct biological mechanisms.

SS-31 (Elamipretide) – investigated for mitochondrial repair and cellular energy production.
MOTS-c – studied for metabolic signalling and exercise adaptation.
Epitalon – investigated for telomere biology and healthy aging research.
GHK-Cu – studied for tissue regeneration and cellular repair.
CJC-1295 with DAC – investigated for sustained GH and IGF-1 signalling.

NOTE: This is for educational reference only and does not constitute medical advice.

Disclaimer
This product is sold for research purposes only. It is not intended to diagnose, treat, cure, or prevent any disease. Buyer assumes full responsibility for proper handling and use.

DNA repair

NAD+ / 500 mg