NAD+
Essential Cellular Coenzyme | Longevity Therapy
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What is NAD+?
NAD+ is a coenzyme — a helper molecule, not a peptide — found in every cell in the body, where it's essential for turning food into usable energy and repairing DNA. Levels decline naturally with age, so researchers study whether restoring NAD+ through injectable or IV administration supports cellular energy, metabolism, and healthy-aging pathways. It's sold here strictly as a research chemical for laboratory study, not for human or animal use.
Key terms:
NAD+ is a coenzyme / dinucleotide.
Nicotinamide adenine dinucleotide (NAD+) is a coenzyme — a helper molecule — present in every cell. It is central to making energy, repairing DNA, and running cell metabolism. NAD+ levels fall naturally with age. Researchers study whether adding NAD+ back supports cell health, energy metabolism, thinking and memory, and longevity.
Key research areas
- Highest bioavailability (100%) via IV administration
- Rapid cellular uptake
- Immediate energy enhancement
- Bypasses digestive limitations
- Supports DNA repair and sirtuin activation
- Restores declining NAD+ levels associated with aging
Researched dosing
This table shows how researchers structure study designs with NAD+ — the IV and IM dose ranges used in published protocols, presented as methodology reference, not usage instructions.
| Phase | Dose | Frequency | Route |
|---|---|---|---|
| General wellness studies | 100-250mg | 1-2x weekly | IV or IM |
| Longevity protocols | 250-500mg | 2-3x weekly | IV infusion |
| Cognitive-performance studies | 500-1000mg | 1-2x weekly | IV infusion |
| Athletic-performance studies | 250-500mg | 2x weekly | IM injection |
| Recovery and repair studies | 500-1000mg | 3x weekly | IV infusion |
| Maintenance | 100-250mg | 1x weekly | SubQ or IM |
Commonly cycled 12 weeks on, 8+ weeks off.
How it works
At the cell level, NAD+ research looks at how the coenzyme powers energy production and helps activate DNA-repair proteins called sirtuins — the terms below just name those processes.
Direct delivery to bloodstream ensures maximum cellular availability for energy production, DNA repair, and sirtuin activation
Molecular data
NAD+ is a coenzyme built from two linked nucleotide units rather than an amino-acid chain, so these figures describe its molecular structure rather than a peptide sequence.
- Weight
- 663.43 Da
- Length
- 0 amino acids
- Type
- Coenzyme / Dinucleotide
Adenine-Ribose-Phosphate-Phosphate-Ribose-Nicotinamide
Pharmacokinetics
This chart shows how quickly a research dose of NAD+ is absorbed and cleared — its short clearance window is part of why research protocols use frequent, smaller doses rather than one large one.
- Peak
- 0.233 hr
- Half-life
- 0.75 hrs
- Cleared
- ~3.8 hrs
Various NAD+ infusion studies
Research applications
This section lists the body systems and research areas scientists have studied for NAD+ — energy metabolism and cellular-aging research chief among them — summarizing what's been studied in the literature, not medical claims about people.
Energy Metabolism
Restores mitochondrial function and ATP synthesis capacity. Enhances glucose and fat metabolism efficiency. Improves oxygen utilization and endurance capacity.
Longevity
Supports cellular health through sirtuin activation and DNA repair mechanisms, addressing age-related NAD+ decline of 10-50% across multiple tissue types.
Neurological Support
Supports cognitive function and neuroprotection through enhanced cellular energy availability and mitochondrial health.
Dosage reference
- Doses used in research
- 250–500 mg
- Frequency in studies
- 1-2x weekly
- Handling
- Reconstituted solution — research use only; not for administration
- Timeline reported in studies
- 30 minutes to 2 hours for initial effects, cumulative benefits over weeks
- Storage
- Refrigerate 2-8°C, use within 28 days after reconstitution
- Cycle length
- 8-12 weeks with evaluation
- Break between cycles
- 4-8 weeks between intensive cycles
Interactions
This list shows which other metabolic-research compounds are studied alongside NAD+, and flags one pairing (alcohol) that research suggests avoiding.
Reconstitution & storage
This is the standard laboratory method for turning freeze-dried NAD+ powder into a liquid research solution, with extra care to avoid heat exposure, which degrades it quickly.
- Clean work surface and wash hands thoroughly
- Wipe tops of both vials with alcohol swabs
- Draw appropriate amount of bacteriostatic water (typically 2-3ml for 500mg vial)
- Inject water slowly into NAD+ vial, aiming at the glass wall
- Gently swirl (do not shake) until completely dissolved - may take 2-3 minutes
- Draw prescribed dose using fresh needle
- Store the reconstituted solution refrigerated (2–8°C), labeled with the date and concentration, for laboratory research use only.
Lyophilized: 2-8°C, use within Not specified
Reconstituted: 2-6°C, use within 28 days
Quality indicators
These are the visual and storage checks researchers use to confirm an NAD+ sample is stable and correctly handled before it goes into a study.
Clear, colorless solution - NAD+ solution should be transparent without particles
Proper refrigeration - Stored consistently at 2-8°C for potency
Sterile technique - Use proper sterile injection procedures
Reconstitution timing - Use within 28 days of mixing with bacteriostatic water
Cloudy or discolored solution - May indicate contamination or degradation
Room temperature storage - Heat degrades NAD+ rapidly, reducing effectiveness
What to expect
This timeline summarizes what the research literature reports at each study stage — research context for comparing studies, not a personal-results promise.
Initial energy improvements and mental clarity
Enhanced physical performance and recovery
Sustained energy levels and improved sleep quality
Optimized metabolic function and cognitive benefits
Safety notes
This section covers handling and regulatory notes for NAD+ — research-use-only scope, IV-administration cautions, and monitoring notes, not medical safety advice for people.
- Start with lower doses to assess tolerance
- IV administration requires medical supervision
- Monitor for injection site reactions
- Avoid alcohol consumption during treatment
- Maintain consistent dosing schedule for best results
Regulatory status
- Not approved by the FDA for any indication.
- Supplied and described for laboratory research use only — not for human or veterinary use.
Community data
Community Insights
Based on data the community reported. Not clinical proof.
References
Demonstrated that intranasal NAD+ delivery protected hippocampal neurons (CA1, CA3, dentate gyrus) and reduced microglial activation following traumatic brain injury.
Randomized, double-blind, placebo-controlled clinical trial demonstrating long-term NR administration is safe and effectively elevates NAD+ metabolites in healthy overweight adults.
Foundational study by Massudi et al. showing NAD+ decreases in skin, brain, heart, and liver by 10-50% during adult aging, correlating with increased oxidative stress and PARP activity.