NAD+ injection

How NAD+ Injection works

NAD+ (nicotinamide adenine dinucleotide) shuttles electrons in the mitochondria during energy production and is used by enzymes involved in DNA repair and cell signaling, such as sirtuins and PARPs. Injecting NAD+ bypasses the gut. In the body it is broken down quickly into related compounds, so how much intact NAD+ reaches cells is not fully understood.

Who it’s for, and who it isn’t

What’s included

• Clinician review of goals, health history and medications
• Guidance on screening for other causes of low energy (labs priced separately)
• Medication and supplies from a licensed U.S. pharmacy
• Injection training
• Follow-up to judge tolerance and whether to continue

Possible side effects

• Redness, stinging or tenderness at the injection site
• Flushing or warmth
• Nausea
• Headache or lightheadedness
• Stomach cramping or chest tightness, which some people report with larger or faster doses

This isn’t a complete list. Your clinician reviews risks, interactions and warnings with you before prescribing. In an emergency, call 911.

What the evidence says

The biology of NAD+ is well established, and lab and animal studies are promising. In humans, a 2023 review in The Journals of Gerontology found that oral NAD+ boosters are safe and raise NAD+ levels, but clinical evidence that this improves physiological function is unclear. Studies of injected or infused NAD+ are fewer and smaller still; a pilot study of a 6-hour IV infusion in eight men tracked how NAD+ was broken down rather than any health outcome.

What NAD+ actually does

NAD+ is a coenzyme found in every living cell. It is central to how mitochondria convert nutrients into usable energy, and it is consumed by enzymes that repair DNA and regulate how cells respond to stress. Research in animals shows NAD+ levels fall with age, and restoring them can improve some markers of aging in those models.

Your body makes NAD+ from vitamin B3 forms and from the amino acid tryptophan. That is why supplements such as nicotinamide riboside (NR) and nicotinamide mononucleotide (NMN) exist: they aim to raise NAD+ indirectly. An injection delivers NAD+ itself.

Where the human evidence stands

Here is the honest summary. Raising NAD+ in people is achievable, and short-term use appears well tolerated. What has not been shown is that it reliably boosts energy, thinking, exercise capacity or lifespan in healthy adults. Human trials are mostly small, short and focused on whether levels rise rather than on how people feel or function.

That does not mean it cannot help anyone, only that any benefit is uncertain and individual. If you try NAD+, go in with a defined trial period and realistic expectations, and be wary of claims that promise reversed aging.

Injection, IV or oral precursors

IV infusions deliver large amounts over hours and commonly cause flushing, nausea or chest tightness when run quickly. Subcutaneous injections use smaller amounts you can give at home in minutes. Oral NR and NMN are the most studied in clinical trials and are sold as supplements without a prescription. No head-to-head trials show that one route produces better outcomes than another.

FDA status

NAD+ injections are compounded by a licensed U.S. pharmacy. They are not FDA-approved for any use, FDA has not reviewed them for safety, effectiveness or quality, and they are not equivalent to any branded product. NAD is listed by FDA as a bulk substance nominated for compounding under section 503A and placed in Category 1, meaning it is still under evaluation and pharmacies may use it under FDA's interim policy while a final decision is pending.

A poor first move for fatigue

Midlife tiredness has many causes, and most are treatable: low iron or B12, thyroid problems, poor sleep or sleep apnea, perimenopause or low testosterone, depression, medication side effects and blood sugar problems. NAD+ addresses none of these directly. Your clinician may suggest checking the basics first so that you do not spend months on a treatment that misses the real problem.

• Sleep quality and possible sleep apnea
• Thyroid function, iron stores and B12
• Blood sugar and insulin resistance
• Hormone status in perimenopause or andropause
• Mood and stress

Who should skip it

NAD+ is not appropriate during pregnancy or breastfeeding, because there is no safety data. People with active cancer should talk with their oncology team first, since NAD+ supports the metabolism of all cells, including tumor cells, and the implications are not well understood. Significant kidney or liver disease, a long medication list or a history of strong reactions to injections also call for a careful review before starting.

It is also worth skipping if your main goal is to treat a specific diagnosis, such as long COVID, depression or addiction recovery. Those uses are promoted online, but they have not been established in controlled trials, and they deserve care aimed directly at the condition. Your clinician can help you find that care.

What your clinician monitors

After training on how to inject, you will check in about how you tolerate the doses and whether you notice any change in energy, focus or recovery. If side effects such as nausea or flushing occur, the dose or timing can be adjusted. If there is no meaningful change after a fair trial, stopping is a sensible choice.

NAD+ injections cost from $199 a month, or $349 for 2 months ($175 a month) or $499 for 3 months ($166 a month), with no membership fee. Labs are billed separately, and your price is confirmed at the eligibility review.

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