NAD+ Precursors (NMN/NR)
Precursors to NAD+, a critical coenzyme for cellular energy and longevity pathways. NAD+ levels decline with age.
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This information is for educational purposes. Peptide therapy should be guided by a licensed healthcare provider. Connect with a Noho clinician
What is NAD+ Precursors (NMN/NR)?
NMN (Nicotinamide Mononucleotide) and NR (Nicotinamide Riboside) are precursors to NAD+ (nicotinamide adenine dinucleotide), a coenzyme essential for cellular energy production, DNA repair, and sirtuin activation. NAD+ levels decline 50% between ages 40-60. Supplementation aims to restore youthful NAD+ levels and support longevity pathways. While not technically peptides, they are commonly discussed alongside peptides in the longevity community.
Why People Talk About It
Restoring age-related NAD+ decline
ModerateSirtuin activation for longevity
EmergingCellular energy and mitochondrial function
ModerateDNA repair support
EmergingHow It Works
NAD+ is the fuel your cells need for energy production and repair. Levels drop as you age. NMN and NR are building blocks that your body converts into NAD+, potentially restoring more youthful cellular function.
Common Questions
Safety Information
Common Side Effects
Cautions
- • Long-term effects of supraphysiological NAD+ levels unknown
- • Theoretical concern about fueling cancer cell metabolism
- • Quality varies between supplement brands
What We Don't Know
Whether raising NAD+ levels translates to meaningful lifespan extension in humans is unproven. Long-term safety of chronic supplementation needs more study.
Published Research
21 studiesThe Science Behind NMN–A Stable, Reliable NAD+Activator and Anti-Aging Molecule
NAD+ Precursors Nicotinamide Mononucleotide (NMN) and Nicotinamide Riboside (NR): Potential Dietary Contribution to Health
The Safety and Antiaging Effects of Nicotinamide Mononucleotide in Human Clinical Trials: an Update
The role of NAD and NAD precursors on longevity and lifespan modulation in the budding yeast, Saccharomyces cerevisiae
Nicotinamide mononucleotide increases muscle insulin sensitivity in prediabetic women
Nicotinamide mononucleotide supplementation enhances aerobic capacity in amateur runners: a randomized, double-blind study
Oral Administration of Nicotinamide Mononucleotide Is Safe and Efficiently Increases Blood Nicotinamide Adenine Dinucleotide Levels in Healthy Subjects
The efficacy and safety of beta-nicotinamide mononucleotide (NMN) supplementation in healthy middle-aged adults: a randomized, multicenter, double-blind, placebo-controlled, parallel-group, dose-dependent clinical trial
Nicotinamide adenine dinucleotide metabolism and arterial stiffness after long-term nicotinamide mononucleotide supplementation: a randomized, double-blind, placebo-controlled trial
Safety and efficacy of long-term nicotinamide mononucleotide supplementation on metabolism, sleep, and nicotinamide adenine dinucleotide biosynthesis in healthy, middle-aged Japanese men
Effect of oral administration of nicotinamide mononucleotide on clinical parameters and nicotinamide metabolite levels in healthy Japanese men
NR-SAFE: a randomized, double-blind safety trial of high dose nicotinamide riboside in Parkinson's disease
A randomized placebo-controlled trial of nicotinamide riboside in older adults with mild cognitive impairment
Nicotinamide riboside for peripheral artery disease: the NICE randomized clinical trial
Nicotinamide Riboside Supplementation Benefits in Patients With Werner Syndrome: A Double-Blind Randomized Crossover Placebo-Controlled Trial
Oral nicotinamide riboside raises NAD+ and lowers biomarkers of neurodegenerative pathology in plasma extracellular vesicles enriched for neuronal origin
Effects of Nicotinamide Mononucleotide on Glucose and Lipid Metabolism in Adults: A Systematic Review and Meta-analysis of Randomised Controlled Trials
NAD+ supplementation for anti-aging and wellness: A PRISMA-guided systematic review of preclinical and clinical evidence
What is really known about the effects of nicotinamide riboside supplementation in humans
The differential impact of three different NAD+ boosters on circulatory NAD and microbial metabolism in humans
Implications of altered NAD metabolism in metabolic disorders
Always consult a qualified clinician
This information is for educational purposes. Peptide therapy should be guided by a licensed healthcare provider. Connect with a Noho clinician
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Quick Facts
- Class
- Nucleotide/Vitamin B3 Derivative
- Evidence
- Moderate
- Safety
- Well-Studied
- Updated
- Mar 2026
- Citations
- 21PubMed
Also known as
Tags
Related Goals
Evidence Score
Clinical Trials
View Clinical TrialsLinks to ClinicalTrials.gov for reference. Listing does not imply endorsement.
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