Why Injection Over Capsules
Oral NAD+ is broken down in the gut before it reaches circulation, which is why most supplements use precursors instead. Subcutaneous dosing gives a known quantity and a predictable response.
Longevity · Cellular Energy
NAD+ Injectable
A mitochondrial cofactor protocol for energy, focus and cellular repair.
NAD+ (nicotinamide adenine dinucleotide) is a coenzyme every cell uses to convert fuel into ATP and to run DNA-repair and sirtuin pathways. Levels decline steadily with age. Subcutaneous injection bypasses the poor oral bioavailability that limits supplement forms.
50%
Approximate decline by midlife
Reported drop in tissue NAD+ from young-adult levels
2–3x
Injections per week
Titrated from a low starting dose
7
Sirtuin enzymes
All require NAD+ as a substrate
Clinical Benefits
What NAD+ Injectable Does in the Body
Cellular Energy
NAD+ is the electron carrier that drives ATP production. Low availability shows up first as fatigue that sleep does not fix.
Sirtuin Activation
Sirtuins regulate metabolic and stress-response genes and cannot function without NAD+ as substrate.
DNA Repair
PARP enzymes consume NAD+ to repair DNA damage; higher availability supports that ongoing maintenance work.
Mental Clarity
Patients commonly report steadier focus and less afternoon crash within the first month.
Metabolic Support
Frequently paired with a GLP-1 protocol, where energy dips during a sustained caloric deficit.
Bypasses Oral Limits
Oral NAD+ is largely degraded before absorption. Subcutaneous dosing delivers a predictable amount.
Mechanism of Action
How It Actually Works
NAD+ is not a stimulant. It is a substrate — the raw material three separate enzyme families compete for. Restoring availability lets those systems run without rationing.
- 01
Redox Cycling
NAD+/NADH shuttles electrons through the citric acid cycle and electron transport chain to produce ATP.
- 02
Sirtuin Signaling
SIRT1 and SIRT3 consume NAD+ to deacetylate targets governing mitochondrial biogenesis and stress resistance.
- 03
PARP-Mediated Repair
DNA damage activates PARP enzymes, which draw heavily on the NAD+ pool.
- 04
Salvage Pathway
Cells recycle nicotinamide back into NAD+ via NAMPT — a pathway that becomes less efficient with age.
Education
What Your Physician Wants You to Understand
Where the Evidence Stands
NAD+ biology is well characterized and precursor trials in humans show reliable increases in blood NAD+. Long-term outcome data for injectable NAD+ in healthy adults is still emerging, and it is prescribed off-label.
Dosing Slowly Matters
Rapid administration causes flushing, chest tightness and nausea. We start low and increase gradually — the discomfort is dose-rate dependent, not an allergy.
Who Gets the Most From It
Adults over 35 with persistent fatigue, patients in a sustained caloric deficit, and those running demanding training or travel schedules.
Peer-Reviewed Evidence
The Trials Behind the Protocol
Martens et al., Nat Commun (2018)
NAD+ precursor supplementation raised NAD+ levels and was well tolerated in healthy middle-aged adults.
Nature Communications
Rajman et al., Cell Metab (2018)
Review of NAD+ boosting molecules and their translational potential in human aging.
Cell Metabolism
Covarrubias et al., Nat Rev Mol Cell Biol (2021)
Comprehensive review of NAD+ metabolism in aging and age-related disease.
Nature Reviews Molecular Cell Biology
Titration Schedule
A Typical Dosing Ladder
Illustrative only. Your physician sets and adjusts your schedule based on tolerance, labs and rate of progress — escalation is never automatic.
| Phase | Dose | Clinical note |
|---|---|---|
| Week 1 | 50 mg twice weekly | Low start to assess flushing and tolerance. |
| Weeks 2–4 | 100 mg twice weekly | Inject slowly over several minutes. |
| Weeks 5–12 | 100–200 mg 2–3x weekly | Dose set by response and tolerance. |
| Maintenance | 100 mg weekly | Ongoing support after the initial cycle. |
Candidacy
Is This Right for You?
Often a Good Fit
- Persistent fatigue not explained by sleep or labs
- Adults over 35 focused on healthspan
- Energy support during a GLP-1 protocol
- Heavy training, travel or shift-work load
Not Appropriate If
- Active or recent cancer diagnosis without clearance
- Pregnancy or breastfeeding
- Severe uncontrolled cardiovascular disease
- Patients seeking FDA-approved therapy only
Safety Profile
Side Effects, Stated Plainly
Most side effects are dose-dependent and resolve with slower titration. Your care team is reachable by message, and holding a dose is always an option.
Common
- Flushing or warmth during injection
- Chest tightness if injected too quickly
- Nausea
- Injection-site redness
Serious — Contact Us Immediately
- Symptoms are strongly dose-rate dependent — slow the injection
- Not appropriate with active or prior malignancy without oncology clearance
- Not for use in pregnancy or while breastfeeding
- Caution with uncontrolled cardiovascular disease
Comparison
How It Compares
| Therapy | Mechanism | Avg. weight change | Frequency |
|---|---|---|---|
| NAD+ Injectable | Direct coenzyme repletion | — | 2–3x weekly |
| NMN / NR (oral) | Precursor, salvage pathway | — | Daily |
| NAD+ IV | Direct repletion, clinic-based | — | Monthly |
FAQ
NAD+ Injectable Questions
Is NAD+ FDA approved?+
Injectable NAD+ is compounded and prescribed off-label by a licensed physician. It is not an FDA-approved drug, and your physician will review that with you.
Why does it feel warm or tight when I inject?+
That is the classic NAD+ flush and it tracks with how fast you push the dose. Injecting slowly over several minutes largely resolves it.
How is this different from NMN capsules?+
Capsules deliver a precursor your body must convert, with substantial loss in the gut. Injection delivers NAD+ directly at a known dose.
Can I combine it with a GLP-1?+
Yes. It is one of our most common pairings, since energy often dips during a sustained caloric deficit.
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View protocolSee If NAD+ Injectable Is Right for You
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