NAD+ has gone from a biochemistry-textbook footnote to a wellness buzzword in a few short years — show up in any longevity podcast or supplement aisle and you'll hear about it. But most of what's written about NAD+ is either impenetrably technical or breathlessly overhyped. This guide is neither. It explains what NAD+ actually is, what's known (and not known) about it, how a clinician-prescribed injection program works, and how to think about whether it makes sense for you.
A quick framing note up front: NAD+ is a coenzyme, not a weight-loss drug and not a peptide. It belongs to a completely different category than the GLP-1 medications most of this blog covers, and it's governed by different considerations. Whether it's appropriate for any individual is a clinical decision made by a licensed clinician — not something to self-diagnose from an article.
What NAD+ actually is
NAD+ stands for nicotinamide adenine dinucleotide. It's a coenzyme — a small helper molecule — found in every living cell in your body. Your cells can't run their basic machinery without it.
Its best-understood job is in energy metabolism. When your body converts food into usable cellular energy (a molecule called ATP), NAD+ acts as a shuttle, carrying electrons through the chemical reactions that make that conversion possible. It cycles constantly between two forms — NAD+ and NADH — picking up and dropping off electrons thousands of times a second across your metabolism. Beyond energy, NAD+ also participates in normal cellular maintenance and signaling processes that researchers are still actively mapping.
Two things are worth knowing:
- NAD+ is essential. This isn't in dispute. Without it, the basic chemistry of life stops. Severe NAD+ depletion is what underlies pellagra, the classic niacin (vitamin B3) deficiency disease.
- NAD+ levels tend to decline with age. Research in humans and animals has observed that tissue NAD+ levels generally fall over the lifespan. This observation is a large part of why NAD+ has attracted so much interest in the longevity and healthy-aging space.
What's important — and where a lot of marketing overreaches — is the leap from "levels decline with age" to "therefore replacing it reverses aging." That leap is not settled science. The research into raising NAD+ levels and what it does in humans is genuinely promising and genuinely incomplete. A good clinician will talk about NAD+ in terms of what's known, not in terms of miracle claims.
The honest state of the evidence
NAD+ is essential to cellular energy metabolism, and its levels decline with age — both well established. What raising NAD+ levels does for energy, healthy aging, and other outcomes in healthy adults is an active area of research and is not fully established. Be skeptical of any source promising specific, guaranteed results.
Why people look into NAD+
People generally come to NAD+ for one of a few reasons: an interest in healthy aging, a desire for everyday energy support, or curiosity sparked by the longevity conversation. Those are reasonable reasons to look into it. They are not, by themselves, a clinical indication — that's a determination a US-licensed clinician makes after reviewing your health history and goals.
This is the core difference between a wellness fad and a clinician-prescribed program. In a fad, you decide you want a thing and you buy it. In a clinical program, you share your history and goals, and a licensed clinician decides whether the treatment is appropriate for you — and tells you when it isn't.
NAD+ supplements vs. injections: what's the difference?
You'll see NAD+ sold in several forms. They are not equivalent.
| Form | What it is | Notes |
|---|---|---|
| Oral precursors (NR, NMN) | Supplements like nicotinamide riboside and nicotinamide mononucleotide that your body converts toward NAD+ | Sold as dietary supplements, not FDA-approved drugs. NMN's supplement status was contested, but in 2025 the FDA confirmed it is not excluded from the dietary-supplement definition (it remains a New Dietary Ingredient subject to notification) |
| Oral NAD+ | NAD+ itself in a capsule | Subject to digestion and first-pass metabolism, which affects how much is usable |
| NAD+ injection | NAD+ administered by subcutaneous injection | Bypasses the digestive tract; used in clinician-prescribed programs |
| NAD+ IV infusion | NAD+ delivered intravenously, usually in a clinic over hours | The most intensive (and expensive) route; often associated with infusion-clinic settings |
A clinician-prescribed subcutaneous injection program — the model Pallas uses — sits in the middle: it's delivered at home on a schedule a clinician sets, without the time and cost of sitting for an IV drip. Which route, if any, is appropriate is part of the clinical conversation.
How a clinician-prescribed NAD+ program works
The structure of a legitimate online NAD+ program looks a lot like any other telehealth prescription program:
- Complete an intake. You fill out a short online questionnaire about your health history, medications, and what you're hoping to address.
- A licensed clinician reviews it. A US-licensed clinician reviews your information and decides whether NAD+ is clinically appropriate for you. It isn't right for everyone, and a responsible program will tell you when it's not a fit.
- If appropriate, it's prescribed and shipped. When a clinician prescribes it, the medication is prepared by a US-licensed pharmacy and shipped to your door, with instructions on how to administer it.
- You stay connected to your care team. Ongoing check-ins and care-team messaging let you adjust course, ask questions, and report how you're doing.
The thing to look for is that a licensed clinician is genuinely in the loop — reviewing your history, making the prescribing decision, and available afterward. A program that will sell anyone an injectable with no real clinical gate is a red flag, not a convenience.
Safety and side effects
NAD+ is generally described as well tolerated, but "well tolerated" is not "risk-free," and self-administered injectables always carry considerations around technique and sterility. With injections specifically, some people report sensations during administration (such as flushing, warmth, or a tight feeling) that ease when the injection is given slowly. As with any prescribed medication, the right move is to review your full health history and current medications with the prescribing clinician, follow the administration instructions exactly, and report anything unexpected to your care team rather than pushing through it.
This is also why the clinician gate matters. A licensed clinician can flag interactions, conditions, or circumstances that make NAD+ a poor choice for a given person — something a direct-to-cart supplement transaction never does.
What it costs
Pricing for clinician-prescribed programs is usually split into two parts: the membership that covers your clinician and care, and the medication itself, billed only if it's actually prescribed.
At Pallas, that looks like a Pallas Membership — $39 for your first month, then $99/month as of this writing — which covers your US-licensed clinician, ongoing check-ins, and care-team messaging. The NAD+ medication, when prescribed, is billed separately (currently $119/month, with a discounted 3-month option), ships free and discreetly, and is refunded if a clinician decides treatment isn't right for you. For current pricing and the full program details, see the NAD+ program page.
The two-part structure is worth understanding because it's also a quality signal: you're paying for clinical oversight, not just a product in a box. The membership doesn't include or guarantee a prescription — a clinician still has to determine that treatment is appropriate.
Curious whether NAD+ is right for you?
Complete a short intake and a US-licensed clinician will review your history and goals to determine whether NAD+ therapy is appropriate for you.
Start your intake →How to evaluate an NAD+ provider
If you're comparing programs, these questions separate legitimate clinical care from a storefront:
- Is a licensed clinician actually making the prescribing decision? There should be a real review of your health history, and the answer to "what if it's not appropriate for me?" should be "then we won't prescribe it."
- What pharmacy prepares the medication? Reputable programs work with US-licensed pharmacies and can say so.
- Can I reach my care team after I start? Ongoing access matters more than a slick checkout.
- Are the claims measured? Honest programs describe NAD+ in terms of what's known and clinician-gated appropriateness — not guaranteed energy, weight loss, or age reversal.
- Is pricing transparent? You should see the full cost — membership and medication — before you pay, with a clear refund policy if treatment isn't prescribed.
The bottom line
NAD+ is a real, essential coenzyme at the center of how your cells make energy, and the interest in it isn't pseudoscience — it's grounded in genuine biology and active research. At the same time, the gap between "essential coenzyme whose levels decline with age" and "proven anti-aging therapy" is real, and the responsible way to explore NAD+ is through a program where a licensed clinician reviews your situation, decides whether it's appropriate, and stays available afterward. That's the difference between a wellness purchase and actual care.
References
The biology and regulatory points above are drawn from the following sources. NAD+ is a coenzyme, not a GLP-1 medication — these are not weight-loss claims, and no GLP-1 trial data applies.
- Covarrubias AJ, Perrone R, Grozio A, Verdin E. NAD+ metabolism and its roles in cellular processes during ageing. Nat Rev Mol Cell Biol. 2021;22(2):119–141.
- NAD+ precursor supplementation in human ageing: clinical evidence and challenges. Nat Metab. 2025.
- NutraIngredients-USA. FDA declares NMN lawful in dietary supplements. 2025.
Frequently asked questions
NAD+ (nicotinamide adenine dinucleotide) is a coenzyme found in every cell in your body. Its best-understood role is in energy metabolism — it helps shuttle electrons through the reactions that convert food into usable cellular energy. It also takes part in normal cellular maintenance and signaling, and its levels tend to decline with age.
No. NAD+ is a coenzyme — a small helper molecule involved in cellular energy metabolism. It is not a peptide and not a GLP-1 receptor agonist like semaglutide or tirzepatide. It belongs to a completely different category of molecule and is used for different reasons.
Two things are well established: NAD+ is essential to cellular energy metabolism, and its levels decline with age. What raising NAD+ levels does for energy, healthy aging, and other outcomes in healthy adults is an active area of research and is not fully established. Be cautious of any source promising specific or guaranteed results, and discuss realistic expectations with a licensed clinician.
Oral precursors like NR and NMN are sold as dietary supplements, not FDA-approved drugs. Oral NAD+ is subject to digestion, which affects how much is usable. NAD+ IV infusions are delivered intravenously, usually in a clinic over hours. A clinician-prescribed subcutaneous injection program is administered at home on a schedule a clinician sets. Which route, if any, is appropriate is part of the clinical conversation.
That's a clinical decision, not a self-diagnosis. A US-licensed clinician reviews your health history, current medications, and goals and determines whether NAD+ is appropriate for you — it isn't right for everyone, and a responsible program will tell you when it's not a fit.
Pricing is split into two parts: a Pallas Membership ($39 for your first month, then $99/month as of this writing) covers your US-licensed clinician, ongoing check-ins, and care-team messaging; the NAD+ medication, if prescribed, is billed separately (currently $119/month, with a discounted 3-month option), ships free and discreet, and is refunded if a clinician decides treatment isn't right for you. See the NAD+ program page for current pricing.