What Is NAD+ — and What the Evidence Actually Shows

NAD+ — nicotinamide adenine dinucleotide — is a coenzyme your cells rely on, and its job is chemistry: it carries electrons in the reactions that turn fuel into usable energy. That is a description of what the molecule does inside a cell. It is not a promise about how you will feel if you supplement it, and that distinction is the whole point of this page. NAD+ has become one of the most hyped compounds in the wellness market, yet a 2026 PRISMA-guided systematic review of NAD+ supplementation concluded that NAD+ augmentation shows clear biological activity but that its clinical effectiveness for anti-aging or wellness outcomes remains inconclusive.^[1] The compounded NAD+ offered through a telehealth program is also not FDA-approved.^[2] Here is the honest version, separated cleanly into what is known and what is being sold.

What NAD+ actually is

Think of NAD+ as a shuttle your cells use constantly. In the process of turning food into energy, cells hand electrons back and forth, and NAD+ is one of the primary carriers in that hand-off. Levels of NAD+ decline with age, and that decline is the premise the entire “NAD+-boosting” category rests on.^[1] So far, none of that is controversial — it is textbook cell biology. The compounds sold to raise NAD+ are usually its precursors — nicotinamide riboside (NR) and nicotinamide mononucleotide (NMN) — or NAD+ itself given by injection.^[1]

Where the biochemistry ends and the marketing begins

The leap the market makes is from "NAD+ is essential to cellular energy" to "therefore taking more of it will give you more energy, reverse aging, or sharpen your mind." That leap is not established. It is entirely possible for a molecule to be indispensable inside a cell and for supplementing it to do little or nothing measurable for how a healthy person feels — the body regulates these systems tightly. Conflating the biochemistry with a felt benefit is the single most common move in longevity marketing, and it is the one to watch for.

What the human evidence shows — and doesn't

Read this part before anything else. The biochemistry of NAD+ is not in dispute; what is thin is the human clinical evidence that supplementing it produces the striking outcomes the category advertises. The 2026 systematic review identified 113 eligible studies — but 80 of them were rodent studies and only 33 were human.^[1] In those human studies, oral NR and NMN consistently raised NAD-related metabolites in blood and cells and were generally well tolerated over weeks to months — a real, measurable effect on a lab value.^[1] But the same review found that, in humans, effects on functional, metabolic, vascular, and other healthspan-relevant outcomes were heterogeneous and often null or endpoint-specific.^[1] The reviewers' overall conclusion was that NAD+ augmentation shows clear biological activity, but that its clinical effectiveness for anti-aging or wellness outcomes remains inconclusive, and they called for larger, well-designed randomized trials with longer follow-up.^[1] Anyone selling NAD+ as a settled fountain of youth is running ahead of the data. That is not a knock on the molecule — it is just where the science currently sits.

Compounded, and what that means

The NAD+ offered through our longevity program is a compounded preparation, and it is not FDA-approved.^[2] Compounded means each preparation is made to a medical provider's prescription by a state-licensed compounding pharmacy — a real, regulated pathway, but a different regulatory category from an FDA-approved drug that has been through the agency's full review. Compounded drugs are not FDA-approved, which means the FDA does not verify the safety, effectiveness, or quality of compounded drugs before they are marketed.^[2] That distinction is not a technicality to mumble past; it is information you should have. Other sites will blur it, or imply the compound is proven to do things the evidence does not support. We are required not to — and we would not anyway.

Forms, and why the choice is not yours to make

NAD+ shows up as injections and intranasal preparations, and you will also see IV drips marketed heavily elsewhere. These are different delivery routes, not different miracle levels. It is worth knowing that the injected form is the one with the least outcomes evidence behind it: the 2026 review found that no eligible outcomes trials evaluated intravenous or intramuscular NAD+ itself for anti-aging or wellness indications, and it specifically called for larger randomized trials of parenteral approaches.^[1] Which form — if any — is appropriate is a medical provider and pharmacy decision, not a checkout option. An injectable or intranasal compound goes into your body and interacts with the rest of your health, which is exactly why the model is provider-gated.

Where a provider fits

A medical provider's job here is to separate the legitimate compound from the illegitimate promises for your specific situation — your history, your labs where they matter, your medications — and to tell you when the answer is no. That is the opposite of a checkout page that already decided you need a subscription. If you are looking at NAD+, you are probably also seeing sermorelin and B12 marketed in the same breath; the sermorelin guide gives that compound the same honest treatment, and the full menu with prices lives on the longevity page.

FAQ

Will NAD+ make me feel younger or more energetic?

That is the promise the category oversells. NAD+ is central to how cells produce energy as a matter of biochemistry, but that is not the same as evidence that supplementing it makes you feel more energetic or younger. A 2026 systematic review concluded that NAD+ augmentation shows clear biological activity, but that its clinical effectiveness for anti-aging or wellness outcomes remains inconclusive, with human effects on healthspan-relevant outcomes heterogeneous and often null or endpoint-specific.^[1] A medical provider decides whether it is appropriate for you.

Is compounded NAD+ approved by the FDA?

No. The compounded NAD+ preparations offered here are not FDA-approved.^[2] Compounded drugs are not FDA-approved, and the FDA does not verify the safety, effectiveness, or quality of compounded drugs before they are marketed.^[2] They are prepared to a medical provider's prescription by a state-licensed compounding pharmacy — a real, regulated pathway, but a different regulatory category from an FDA-approved drug that has completed the agency's full review.

What is the difference between an IV, an injection, and a nasal form?

They are different delivery routes for the same compound. Which form, if any, is appropriate is a medical decision, not a menu choice — a provider weighs your history and what is actually dispensable before anything is prescribed.

Is NAD+ safe?

The honest answer is that the injected and intranasal forms are the ones with the least trial evidence behind them. The 2026 review found no eligible outcomes trials evaluated intravenous or intramuscular NAD+ itself for anti-aging or wellness indications; the one nonrandomized intravenous study it included contributed mainly short-term safety and biomarker information.^[1] Because these preparations go into your body and interact with the rest of your health, which form — if any — is appropriate is decided by a medical provider licensed in your state after reviewing your specific risk.

Related guide: Sermorelin: What to Know Before You Consider It

This guide is general information, not medical advice. Statements here have not been evaluated by the FDA and describe no diagnosis, treatment, cure, or prevention of any disease; individual results vary and no outcome is promised. Compounded NAD+ preparations are not FDA-approved; they are prepared to a medical provider's prescription by state-licensed compounding pharmacies operating under USP standards and are distinct from FDA-approved drugs that have completed the agency's full review. Whether any compound is appropriate is decided by a medical provider licensed in your state. This program is not a substitute for primary medical care. In a medical emergency, call 911.