NAD+

From Retapedia, the free peptide encyclopedia
"NAD+" redirects here. For other uses, see NAD+ (disambiguation).
Medical disclaimer. This article is for informational purposes only and does not constitute medical advice. Consult a qualified clinician before considering any compound discussed below. See Retapedia : Medical disclaimer.

NAD+ (also known as NAD+ or Nicotinamide Adenine Dinucleotide) is a therapeutically researched peptide studied for its effects on anti-aging, recovery, metabolic health. Essential cellular coenzyme for energy, DNA repair, and aging. Oral precursors (NMN/NR) or IV boost NAD+ levels. Cellular benefits proven, longevity claims unproven.

NAD+ (Nicotinamide Adenine Dinucleotide) is a critical coenzyme found in all living cells that plays essential roles in cellular metabolism, energy production, DNA repair, and aging processes. NAD+ levels naturally decline with age (up to 50% by middle age), contributing to mitochondrial dysfunction, reduced cellular repair capacity, and various age-related conditions. NAD+ serves as a crucial substrate for sirtuins (SIRT1-7) and poly(ADP-ribose) polymerase (PARP) enzymes that regulate cellular longevity, stress adaptation, and DNA repair mechanisms.

Natty status
NAD+ is generally regarded as compatible with natural bodybuilding, though competitive federations may differ. See § Natty status.
Contents [hide]
  1. 1 Overview
  2. 2 Mechanism of action
  3. 3 Reported effects
  4. 4 Dosage and administration
  5. 5 Natty status
  6. 6 Research
  7. 7 Related compounds
  8. 8 References
  9. 9 External links

Overview

While NAD+ itself is poorly absorbed orally, precursor compounds including Nicotinamide Riboside (NR) and Nicotinamide Mononucleotide (NMN) effectively increase NAD+ levels via salvage pathways.

Clinical trials demonstrate NR/NMN supplementation (250-1000mg daily) safely elevates blood NAD+ levels, with observed improvements in mitochondrial function, insulin sensitivity, muscle performance, and cardiovascular markers.

However, experts emphasize there is no conclusive evidence that NAD+ supplementation extends human lifespan despite cellular benefits.

Common administration methods include oral supplementation (NR/NMN), IV infusions (500-1500mg, 2-4 hours), and subcutaneous injections (50-100mg weekly).

Side effects are generally mild and transient, including nausea, flushing, headache, and GI discomfort.

Potential concerns include unknown long-term safety profile, theoretical tumorigenesis risk (unproven in humans), and significant cost ($1000+ for IV sessions).

NAD+ restoration represents a promising but still investigational approach to cellular regenerative medicine, requiring more robust long-term human clinical trials to establish definitive therapeutic applications and longevity benefits.

Mechanism of action

Boosts cellular energy production and DNA repair. Activates longevity enzymes. Improves metabolism and mitochondrial health. Cellular benefits proven, human longevity unproven.

Reported effects

Effects reported in the literature and from preclinical models include:

  • Nicotinamide and NAD+ enhance mitochondrial function and cognitive resilience in Alzheimer's disease models by counteracting PARP1-driven NAD+ depletion and neuroinflammation [3] Preclinical
  • The NAD+/SIRT1 axis links energy metabolism to epigenetic and circadian regulation, and NAD+ restoration is an experimental strategy for age-related liver metabolic dysfunction [5] Preclinical
  • Inherited deficiencies in NAD biosynthesis and recycling cause multi-system neurologic impairment including seizures, movement disorders, and neurodevelopmental deficits, underscoring NAD+'s essentiality for neurological health [4] Preclinical
  • NAD+ availability is central to cancer cell bioenergetics, as blockade of lactate transporters depletes intracellular NAD+ and induces metabolic stress in glycolysis-dependent tumor models [2] Preclinical
  • The NAD+-dependent deacetylase SIRT2 is mechanistically linked to aging and to neurodegenerative and cancerous diseases, making NAD+ availability a key factor in cellular longevity pathways [1] Preclinical
  • NAD+ depletion links impaired autophagy to neuronal death in lysosomal storage and age-related neurodegenerative disease models such as Niemann-Pick type C1 [6] Preclinical
  • Elevated nicotinamide N-methyltransferase reduces NAD+ availability and drives mitochondrial dysfunction and epithelial barrier impairment in inflammatory bowel disease tissues [7] Preclinical

Evidence grades: FDA approved Phase III Phase II Phase I Preclinical Anecdotal

Dosage and administration

⚠
Dosage information is included for encyclopedic purposes only. Retapedia does not provide medical advice. See Retapedia : Medical disclaimer.

Oral NMN

  • Beginner: 250mg daily on empty stomach
  • Intermediate: 500-600mg daily, split into 2 doses
  • Advanced: 900-1200mg daily for intensive protocols

Oral NR

  • Beginner: 100-300mg daily
  • Standard: 500mg daily (most studied dose)
  • Advanced: 1000-2000mg daily for therapeutic goals

IV Infusion

  • Standard: 500-750mg per session over 2-4 hours
  • Intensive: 1000-1500mg per session

Subcutaneous Injection

  • Start: 50mg (0.5mL) once weekly for 4 weeks
  • Maintenance: 100mg (1mL) 1-3x weekly

Timing

  • Take oral forms morning/early afternoon (may affect sleep if taken late)

Frequency

  • Oral daily, IV weekly to monthly, injections 1-3x weekly

Natty status

See also: Peptide § Natty status

NAD+ is generally regarded as compatible with the natty designation, particularly when used for therapeutic healing purposes. Opinions vary across natural bodybuilding federations, and athletes who compete should consult the rulebook of their respective sanctioning body.[8]

Research

139 active clinical trials on record — highest phase: Phase 4
View on ClinicalTrials.gov · fetched Jun 3, 2026

The peptide has been the subject of 16 studies and reference works collected on this site. The full bibliography is in § External links below.

Other peptides in this catalogue with overlapping mechanisms or status:

BPC-157 Natty
Speeds healing of tendons, ligaments, muscles, and gut. Reduces inflammation and muscle soreness. Minimizes scar tissue formation.
Ipamorelin Natty
Stimulates growth hormone release without cortisol/prolactin effects. Improves sleep quality, recovery, and body composition. Minimal side effects.
CJC-1295/Ipamorelin Stack Natty
Boosts growth hormone 3-5x higher than individual peptides. Improves sleep quality, muscle mass, fat loss, and recovery. Minimal side effects.
MK-677 Natty
Increases lean muscle mass, bone density, and deep sleep quality. Enhances recovery and tissue healing. Risk of blood sugar issues.

References

  1. ^ Insights into SIRT2 inhibition from machine learning-assisted multi-level screening of the NCI database.
  2. ^ Repurposing Syrosingopine for Cancer Therapy: Lactate Trapping and ISR Sensitization as Metabolic Vulnerabilities. Recent review
  3. ^ From DNA repair to neurodegeneration: PARP1 mechanisms and inhibitor strategies in Alzheimer's disease. Recent review
  4. ^ Clinical and biochemical footprints of inherited cofactor disorders. Recent review
  5. ^ Epigenetic Information Loss and Chronosenescence in Liver Aging: From Molecular Mechanisms to Therapeutic Interventions. Recent review
  6. ^ From autophagy-lysosomal deficits to neurodegeneration in Niemann-Pick type C1 disease: implications for age-related neurodegenerative disorders. Recent review
  7. ^ Nicotinamide N-methyltransferase in Inflammatory bowel disease: Multidimensional Regulation, Mechanistic Insights, and Therapeutic Potential. Recent review
  8. a b World Anti-Doping Agency. (2026). Prohibited List 2026.

External links

Categories: Peptides | Therapeutic peptides | Anti-aging | Recovery | Metabolic health | Oral

This page was last edited on June 3, 2026, at 14:58 (UTC).

Research last reviewed on June 3, 2026.

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