NAD+

NAD+ (nicotinamide adenine dinucleotide) is a coenzyme your cells already make that helps power metabolism, energy production, and DNA repair. It is sold as a research compound and as IV or injectable wellness products, but it is not an FDA-approved drug for anti-aging or performance. This page is for education only and is not medical advice; talk to a licensed clinician before making any health decision.

What is NAD+?#

NAD+ is a coenzyme — a small helper molecule — found in every living cell. Unlike most peptides cataloged here, it is not a synthetic drug or a foreign substance: your body continuously makes its own NAD+ from forms of vitamin B3 (niacin, nicotinamide) and from precursors such as nicotinamide riboside (NR) and nicotinamide mononucleotide (NMN).

Chemically, NAD+ is a dinucleotide built from two nucleotides joined through their phosphate groups, one carrying an adenine base and the other carrying a nicotinamide group. It exists in two interchangeable forms, the oxidized NAD+ and the reduced NADH, and the ratio between them is a key signal of a cell's energy and metabolic state.

In the wellness market, "NAD+" is sold in several different forms: research-grade lyophilized powder labeled "for research use only," injectable preparations, and clinic-administered IV infusions. It is discussed in the longevity and metabolic category because tissue NAD+ levels are reported to decline with age.

How does NAD+ work?#

NAD+ has two broad jobs in the cell.

• Redox / energy metabolism. NAD+ shuttles electrons during the breakdown of carbohydrates, fats, and proteins, cycling between NAD+ and NADH to help drive ATP (energy) production in the mitochondria. This role is fundamental to how cells generate energy.
• Signaling and repair. NAD+ is also consumed as a substrate by enzymes including sirtuins (linked to stress resistance and gene regulation), PARPs (involved in DNA repair), and CD38. Because these enzymes use up NAD+, the cell must constantly regenerate it.

The central idea behind NAD+ research is that tissue NAD+ tends to fall with age and in some disease and ischemic states, which could contribute to mitochondrial dysfunction and impaired repair. The hypothesis is that restoring NAD+ — directly or through precursors — might support healthier aging and metabolism.

It is important to separate mechanism from proven benefit. A plausible biochemical role, even a well-established one, does not by itself prove that taking extra NAD+ or its precursors makes a healthy person live longer or perform better.

What is NAD+ studied for?#

Most human evidence comes from trials of oral precursors (NR and NMN) rather than from NAD+ given directly, and reviewers generally describe the clinical results so far as modest and not firmly established.

A 2023 Endocrine Reviews paper framed NAD+ in aging biology as having real promise but "many unknowns." A 2023 Science Advances analysis of nicotinamide riboside concluded that oral NR has shown few clinically relevant effects in humans and that the literature tends to exaggerate the importance of reported findings. A 2024 systematic review of NMN trials found mostly non-significant changes in physical performance, while noting it was generally well tolerated.

Is NAD+ legal and FDA-approved?#

NAD+ is not an FDA-approved drug for anti-aging, energy, addiction recovery, cognitive enhancement, or athletic performance. There is no approved NAD+ medicine for those uses.

• IV and injectable NAD+ are offered by wellness clinics under off-label or "integrative" frameworks rather than as FDA-approved treatments; the FDA has not recognized NAD+ infusions as a proven therapy.
• Research-grade NAD+ is sold "for research use only" and is not made to pharmaceutical standards.
• Oral precursors such as NR and NMN are marketed as dietary supplements; under the U.S. DSHEA framework, supplements are not approved by the FDA before sale, and the regulatory status of NMN specifically has been contested.

For athletes: NAD+ is not named on the 2026 WADA Prohibited List. However, anti-doping resources caution that WADA's S0 category can capture non-approved or experimental substances, and that WADA's IV-infusion volume limits may be exceeded by the large fluid volumes used in typical NAD+ drips. Under strict liability, athletes should verify current rules before using any form. None of this is a recommendation to obtain or use the compound, and legal status varies by country.

How is NAD+ dosed in research?#

There is no validated, universally accepted human dose of NAD+ for any anti-aging or performance use, and WikiPeps does not publish dosing protocols or amounts. Reported clinic IV protocols and supplement precursor doses vary widely, come from settings that are not standardized, and are not a guide for personal use. Unregulated research-grade products also carry no assurance of identity, purity, or sterility.

Whether any NAD+ product is appropriate, in what form, and at what amount, is a medical decision that belongs with a licensed clinician who can weigh an individual's health, other medications, and the limited human evidence.

How is NAD+ reconstituted?#

Research-grade NAD+ generally arrives as a lyophilized (freeze-dried) powder that must be reconstituted with a sterile diluent before any laboratory use, kept cold, and protected from rough handling. The general process — disinfecting the stopper, adding diluent slowly down the vial wall, swirling gently rather than shaking, and labeling and refrigerating — is covered step by step in our reconstitution guide. This is described for education only and is not an instruction to self-administer.

What are the safety considerations?#

NAD+ is a natural molecule, but taking it as an infusion or injection is a different matter from the NAD+ your body makes internally, and the long-term safety of supplemental NAD+ in healthy people is not well established.

• IV infusion reactions. Reported side effects of IV NAD+ include nausea, flushing or warmth, lightheadedness, headache, chest pressure or tightness, and muscle cramps. These are commonly linked to fast infusion rates and often ease when the drip is slowed, which is why clinic infusions are typically given slowly over hours.
• Injection and product risks. Any injection carries risks of infection and injection-site reactions, and "research use only" products are not pharmaceutical-grade and may be contaminated or mislabeled.
• Unknown long-term effects. Because NAD+ feeds enzymes involved in cell growth and DNA repair, the long-term consequences of chronically pushing NAD+ levels up are not fully understood, including any theoretical effects on cell-growth biology.
• Interactions and individual factors. Effects in people with existing conditions or on other medications have not been well studied.

These are reasons to involve a licensed clinician before considering any use and to be skeptical of strong anti-aging or energy marketing claims that the current evidence does not support.

The bottom line#

NAD+ is an essential coenzyme your body already makes, central to energy metabolism, DNA repair, and cell signaling, and it appears to decline with age. That biology has fueled interest in NAD+ and its precursors for longevity, metabolic health, and performance — but human evidence to date is modest and far from settled, and most of it tests oral precursors rather than NAD+ itself. NAD+ is not an FDA-approved drug for these uses, IV and injectable products sit in a regulatory gray zone, and supplemental safety over the long term is not well characterized. Use this page for education, treat bold claims cautiously, and consult a licensed clinician before any health decision.