NAD+
Nicotinamide Adenine Dinucleotide. The master coenzyme of cellular energy, DNA repair, and longevity.
Last updated: August 2026
Category
Longevity & Energy
Frequency
Daily (oral) or weekly (IV/injectable) (community practice, no trial)
Research
Extensive Preclinical + Human TrialsWhat is NAD+?
NAD+ (Nicotinamide Adenine Dinucleotide) is a coenzyme found in every living cell. It is essential for over 500 enzymatic reactions including the production of ATP (cellular energy), DNA repair, and the activation of sirtuins, a family of proteins that regulate aging, metabolism, and stress resistance. Browse the full peptide library for related longevity compounds.
Tissue NAD+ is widely described as falling with age, and that decline is the premise behind the whole supplement category. The specific figure that circulates, a 50 percent drop between the ages of 40 and 60, has been removed from this page: it is repeated far more often than it is sourced, measurements differ sharply by tissue and by assay, and no single study establishes it as a general rule. Whether raising NAD+ back up changes anything that matters in humans is still an open question rather than a settled one. Exercise, sleep and sunlight also move NAD+ without a purchase, covered in our guide on how to increase NAD+ naturally.
Injectable or IV NAD+ delivers the coenzyme directly into the bloodstream, bypassing the digestive breakdown that limits oral supplementation, where NMN and NR are precursors rather than NAD+ itself. It is offered in clinics for addiction recovery, neurological recovery and general anti-aging use, none of which rests on a controlled trial of the infusion. It is often discussed alongside Epitalon (community practice, no trial), a pairing nobody has tested.
How It Works
Sirtuin Activation: NAD+ is the essential cofactor for sirtuin proteins (SIRT1 to 7), which regulate gene expression, DNA repair, inflammation, and metabolic function. Higher NAD+ levels = more active sirtuins = better cellular maintenance.
PARP Activation: NAD+ fuels PARP enzymes (Poly ADP-Ribose Polymerases) which are critical for DNA repair. DNA damage accumulates with age; robust PARP activity keeps the genome stable.
ATP Production: NAD+ is the electron carrier in the mitochondrial electron transport chain, the final step in cellular energy production. More NAD+ = more efficient ATP production = more energy.
CD38 Regulation: CD38 is an NADase enzyme that increases with aging and consumes NAD+. The idea of inhibiting CD38 while supplementing NAD+ follows from that mechanism, but no human trial has tested the combination, so whether it amplifies anything in people is unknown.
Benefits
- Increased cellular energy and reduced fatigue
- Enhanced DNA repair capacity
- Sirtuin activation: downstream anti-aging effects
- Improved cognitive function and mental clarity
- Metabolic improvements (insulin sensitivity, mitochondrial function)
- Faster recovery from exercise and injury
- Neuroprotection and addiction recovery support
- Potential lifespan extension (animal models)
Dosing Described in Research and Labels
| Phase | Dose | Frequency | Duration |
|---|---|---|---|
| Oral precursors (NMN/NR) | Sold as a supplement; no established dose | Oral | Not established |
| Injectable or IV (clinic) | No established dose | Subcutaneous or intravenous | Not established |
These figures summarise what published research and approved labels describe. They are educational, not a recommendation or a personal protocol. Any dose, schedule, or decision to use a compound belongs with a licensed prescriber.
Side Effects
Common
- ⚠Flushing (particularly with rapid IV infusion)
- ⚠Nausea during IV administration (slow the drip)
- ⚠Muscle cramping or tight chest during IV (from rapid rate)
- ⚠Headache
- ⚠Fatigue in first 1 to 2 days (detox response)
Rare
- •Anxiety or restlessness at high IV doses
- •Hypotension with rapid IV infusion
Who Should NOT Use NAD+
- ✕Active cancer (consult oncologist: sirtuins can theoretically help or hinder depending on cancer type)
- ✕Pregnancy or breastfeeding
- ✕History of severe cardiovascular disease (for high-dose IV)
What to Expect
IV or injectable NAD+ often produces immediate energy and mood effects. Flushing and nausea possible during infusion.
Sustained energy improvement. Cognitive clarity often notable. Sleep quality may improve.
Metabolic improvements. Better exercise recovery. Oral users see more gradual benefits over this timeframe.
Quarterly IV courses with daily oral NMN in between is the commonly reported pattern (community practice, no trial). No trial has tested that schedule, or measured what long-term use of either route does.
Notes from Ho Chi Minh City
NAD+ is one of the few longevity protocols where HCMC IV-drip clinics are a genuine retail route rather than only a research-grade option: the Maple Healthcare clinic in District 2 and the IV Doctors operation in An Phu run NAD+ drips, with users describing the cleanest cognitive lift in the category over the following day or two. The clinically important detail is that the infusion is run slowly on purpose; pushing it fast is what produces the chest tightness and nausea people are not warned about. Home subcutaneous protocols and oral NMN from Thao Dien supplement retailers are the routes people use outside a clinic (community practice, no trial), but infusion rate, dose, and route are exactly what a clinician supervises, not something to improvise.
Sourcing in Vietnam
NAD+ IV drips are available at HCMC wellness clinics including Maple Healthcare (District 2), IV Doctors (An Phu), and several District 1 longevity clinics. Injectable NAD+ for home protocols is sourced through cold-chain importers, and oral NMN supplements are widely available at HCMC supplement retailers and on Lazada/Shopee. None of that is a regulated pharmaceutical route: NAD+ is not stocked at Long Châu or Pharmacity as a registered product, and no approved label sets an established dose for it by any route. See the supplier list and COA guide before purchasing injectable forms.
FAQ
Q: Is injectable NAD+ better than NMN or NR?
A: No head to head trial has compared the routes, so nobody has shown that one produces better outcomes than another. Factually, NAD+ given by injection or infusion enters the circulation directly while NMN and NR are oral precursors that cells convert. The human evidence on the oral precursors is short and limited: a randomised placebo-controlled crossover trial found that 6 weeks of nicotinamide riboside was well tolerated and raised NAD+ in healthy middle-aged and older adults, with blood pressure and arterial stiffness flagged only as questions for future trials (human trial, not a recommendation, PMID 29599478). Assigning each route a job, one for effect and one for maintenance, is protocol design, and that is a clinical decision rather than something a guide should be making.
Q: Can I stack NAD+ with other longevity peptides?
A: No trial has tested NAD+ alongside Epitalon or MOTS-c, in any combination, so there is no evidence describing what that grouping does in people and no interaction data to report. Absence of interaction data is not evidence that a combination is safe. Each mechanism can be described on its own, and the individual evidence bases are thin and mostly short term, but describing three mechanisms is not the same as testing them together. Whether any of them belongs in use, alone or alongside anything else, is a clinical decision. Source from the community-verified supplier list. For how NAD+ therapy is offered in HCMC and Hanoi, see the NAD+ therapy guide for Vietnam.
Where to Get NAD+ in Vietnam
See our community-verified supplier list with COA verification and cold-chain shipping to Vietnam.
Related Peptides
Related Guides
Research & Sources
- NAD+ in aging, metabolism, and neurodegeneration · Verdin E · Science (2015) (PMID: 26785480)
Foundational review of NAD+ decline with age and the rationale for supplementation as a longevity intervention.
- Therapeutic potential of NAD-boosting molecules: the in vivo evidence · Rajman L, Chwalek K, Sinclair DA · Cell Metabolism (2018) (PMID: 29514064)
Comprehensive review of NMN and NR pharmacokinetics and the rationale for IV NAD+ over oral precursors.
- Long-Term Administration of Nicotinamide Mononucleotide Mitigates Age-Associated Physiological Decline in Mice · Mills KF, Yoshida S, Stein LR, et al. · Cell Metabolism (2016) (PMID: 28068222)
Animal data demonstrating NMN supplementation preserves NAD+ levels and metabolic function with age.
- Effect of nicotinamide mononucleotide on insulin sensitivity in prediabetic women · Yoshino M, Yoshino J, Kayser BD, et al. · Science (2021) (PMID: 33888596)
Human randomized trial showing measurable metabolic benefits from oral NMN in prediabetic postmenopausal women.
Important Disclaimer
Educational content only. Not medical advice. Peptides discussed on this page are not approved by Vietnam’s Ministry of Health (Bộ Y Tế) or the Drug Administration of Vietnam (DAV) for the indications described. Research peptides are not stocked at Long Châu, Pharmacity, or any retail pharmacy in Vietnam. Consult a licensed physician before any use.