The Complete Guide to
NAD+ Therapy
A deep dive into mitochondrial optimization, sirtuin activation, and clinical protocols.
ABACT Board
15 min read
|Updated Feb 2, 2026
What is NAD+?
Nicotinamide Adenine Dinucleotide is a critical coenzyme found in every living cell. It powers ATP production (energy) and DNA repair. Without it, mitochondria cannot function, leading to metabolic slowdown and cellular death.
Historical Context
The Discovery
British biochemists Arthur Harden and William John Young identify NAD+ while studying yeast fermentation.
The Modern Revival
Labs like Dr. David Sinclair’s illuminate the link between NAD+ decline and genomic instability, sparking the “longevity revolution.”
The Mechanism: How It Works
Cellular Biology1. Energy (ATP)
Acts as an electron shuttle. Without NAD+, mitochondria fail to produce ATP, causing fatigue.
2. Sirtuin Activation
Fuels “guardian genes” (SIRT1-7) that regulate inflammation. They are 100% NAD+ dependent.
Read Nature Review →3. DNA Repair
PARP enzymes consume NAD+ to fix DNA strands damaged by UV rays and oxidation.
Science Deep Dive: The Salvage Pathway
The body creates NAD+ via the de novo pathway (from Tryptophan) or the salvage pathway (recycling). As we age, an enzyme called CD38 becomes overactive, aggressively consuming NAD+ and preventing recycling. This creates a deficit where demand exceeds supply.
“CD38 expression is a primary driver of age-related physiological decline.”
View Cell Metabolism StudyEvidence-Based Benefits
Cognitive Function
Restoration of mitochondrial efficiency in neurons. Studies suggest neuroprotection against Alzheimer’s by reducing neuroinflammation.
See NIH StudyAddiction Recovery
Used clinically to flush drug metabolites and replenish neurotransmitters, significantly reducing withdrawal symptoms.
Review: Addiction MedicineChronic Fatigue (CFS)
Boosts systemic ATP production. Clinical reports indicate improvements in physical endurance and reduction in “brain fog” for Long Covid/CFS.
Metabolic Health
Influences circadian rhythms and insulin sensitivity. Can aid weight management in pre-diabetic models.
Science MagazineAnti-Aging & Genomic Stability
By activating PARPs and Sirtuins, NAD+ therapy promotes telomere maintenance and reduces oxidative stress. This targets the “Healthspan”—maximizing the years spent free of chronic disease.
Administration Protocols
| Method | Bioavailability | Speed | Best For |
|---|---|---|---|
| IV Drip | 100% | Immediate | Acute detox, rapid anti-aging. |
| Subcutaneous | High | Fast | Maintenance between IVs. |
| Oral (NR/NMN) | Variable | Slow (Weeks) | Daily prevention. |
IV Therapy Details
Delivers NAD+ directly into the bloodstream, bypassing the liver. This ensures maximum tissue saturation.
- Duration: 2–4 hours (250mg – 1000mg).
- Reaction: Must be slow to avoid abdominal cramping and chest pressure.
Oral Precursors
NAD+ is too large to enter cells intact orally. Scientists use precursors.
Nicotinamide Riboside. Generally recognized as safe (GRAS).
Nicotinamide Mononucleotide. One step closer to NAD+. See Clinical Trials.
Who is a Candidate?
- Substance abuse recovery
- Neurodegenerative family history
- High-performance athletes
- Executive cognitive decline
Safety & Side Effects
NAD+ is endogenous and generally safe. IV side effects are distinct and temporary.
Disclaimer: Always consult a licensed professional. Not FDA-approved for specific disease treatment.
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