NAD+ Injections: Benefits, Side Effects, Dosage and Cost (2026)

The short answer

An NAD+ injection is a compounded shot of nicotinamide adenine dinucleotide, usually self-injected under the skin at home. Telehealth providers sell it for about $99 to $299 a month. It is not FDA-approved, and no human trial has tested injected NAD+ for energy, cognition or aging¹. The common side effects are nausea, flushing and injection-site reactions.

What is an NAD+ injection, and why do clinics sell it?

NAD+ is a coenzyme every cell uses to turn food into energy and to run the enzymes that repair DNA, including the sirtuins and PARPs. Levels fall with age in animals and in several human tissues, and restoring them improves a long list of aging markers in mice². That animal biology is the whole sales pitch.

The injection exists because swallowed NAD+ is largely broken down in the gut. Oral products sell precursors instead (nicotinamide riboside or NMN), which the body converts into NAD+. An injection skips the conversion and puts NAD+ itself under the skin.

What you are buying is a delivery route, not a proven result. The route comparison, including oral and nasal, is in NAD+ injections vs IV vs oral, and the safety picture for the clinic drip is in is NAD+ IV therapy safe?.

Are NAD+ injections FDA-approved?

No. No NAD+ injection has been approved by FDA for any use. What telehealth providers ship is compounded: made to a prescription by a pharmacy. FDA states plainly that compounded drugs are not FDA-approved and that it does not review their safety, effectiveness or quality before they are sold³.

NAD+ has a specific status on top of that. Pharmacies can compound from a bulk ingredient only if it meets certain conditions, and FDA keeps a list of nominated ingredients sorted into categories. On the version updated May 14, 2026, nicotinamide adenine dinucleotide (NAD) sits in Category 1, "Bulk Drug Substances Under Evaluation"⁴. Under its interim policy, FDA does not intend to take action against a 503A compounder that uses a Category 1 substance, as long as the conditions in its guidance are met⁵.

In plain terms, FDA tolerates compounding NAD+ while it decides. That is not a finding that it is safe or that it works. One provider we grade, HealthRX, says so on its own product page: NAD+ injection "is not FDA-approved for any use." That is the standard to hold every seller to. Our HealthRX review covers the rest of its disclosures.

What benefits does the human evidence actually show?

Less than the marketing implies, and almost none of it is for the injection you would buy.

For oral precursors, there is real trial data. Nicotinamide riboside reliably raises blood NAD+ and is well tolerated in middle-aged and older adults⁶. NMN improved muscle insulin sensitivity in a trial in prediabetic women⁷. Across all routes, the 2026 PRISMA-guided systematic review found that functional and metabolic results were "heterogeneous and often null"¹.

For injected or IV NAD+ itself, the same review found no eligible outcomes trial at all for anti-aging or wellness¹. The human data on parenteral NAD+ is a handful of small studies:

• •A 6-hour IV infusion in eight healthy men (750 mg). Plasma NAD+ did not rise for the first two hours, then rose about fourfold by the end of the infusion. There were no adverse events at that slow rate, and the study measured metabolites, not how anyone felt⁸.
• •A randomized trial in 180 heart-failure patients in China. IV NAD+ at 10 mg a day for seven days improved ejection fraction at one month (45.4% vs 42.4% on placebo). Hospitalizations and events trended lower but did not reach significance⁹. That is a sick population, a single center, and a dose a fraction of what wellness clinics use.
• •A retrospective review of six clinic clients given 500 mg IV, run by the clinic company's own staff. It reported tolerability, not benefit¹⁰.

For the subcutaneous shot a telehealth provider mails you, there is no published outcomes trial. HealthRX's page describes the most relevant human study as "a single 50-person, eight-week pilot that measured safety." It does not name the study, and the page adds that there is no solid human data on energy, fatigue, cognition or aging markers.

So the honest list of proven benefits for NAD+ injections is empty. The claims about energy, focus and recovery come from customer reports and animal studies, not from trials of the product.

How often, and at what dose, do providers prescribe it?

Published dosing from the providers we grade clusters around 500 to 1,000 mg a month, split into several small shots under the skin. These are what sellers publish, not a recommendation; your prescriber sets the actual schedule.

Two points are worth knowing. First, nobody has run a dose-finding trial for injected NAD+, so these numbers came from clinical habit rather than evidence. Second, the IV study above used 750 mg because it "reflects a common dosing regimen in clinics"⁸, which shows the same loop: the research copied practice rather than the reverse.

What side effects do people report?

The pattern is consistent across sellers and the small studies. Most effects are short-lived and tied to how fast NAD+ goes in.

The two IV studies make the rate point clearly. Spread over six hours, 750 mg caused no recorded problems. Given as 500 mg in a typical clinic session, every client had symptoms, which stopped when the infusion ended, and the drip had to be slowed to an average of 97 minutes¹⁰. An under-the-skin shot is a much smaller dose at once, which is why its reported problems are milder: mostly nausea, flushing and a sore spot.

When to stop and call a clinician: chest pain that does not pass, trouble breathing, a spreading red or hot area at the injection site (possible infection), or fainting.

How much do NAD+ injections cost per month?

These are the published prices on each provider's own site for the at-home injection, sorted from lowest to highest. Read the term column; the advertised number is often a long-plan rate.

Prices change often. The live figure, grade and term for every provider are on the graded ranking, and the traps to read for (prepay rates, first-month promos, required memberships) are in what longevity care actually costs.

For comparison, a clinic IV drip runs $299 to $1,000 per session on one national chain's menus, so a monthly drip habit costs far more than any at-home plan.

Who should skip NAD+ injections?

The list above is what HealthRX publishes as the conditions where it proceeds with extra caution, plus pregnancy and age under 18. Other sellers publish shorter lists or none. If you take medicines for your heart, blood pressure or blood sugar, raise them with the prescriber before the first shot.

How to choose, honestly

• •If you want the route with human trials behind it, that is oral NR or NMN, with modest expectations. See NMN vs NR and the trial-by-trial review in NAD+ for longevity.
• •If you want the injection anyway, choose on what you can check: a month-to-month price you can see before the intake, a named or 503A pharmacy, and a seller that says plainly the product is not FDA-approved.
• •If a seller promises energy, focus or anti-aging results, ask which trial shows it. For the injection, there isn't one.

All of our NAD+ coverage, from the molecule to the providers, starts at the NAD+ hub.