NAD+ safety, side effects and monitoring
NAD+ is a coenzyme present in every living cell, central to mitochondrial energy production and to the activity of sirtuins and PARP enzymes involved in DNA repair. It is sold by longevity and wellness clinics as an intravenous infusion, a subcutaneous injection and an oral or sublingual supplement, marketed for energy, cognition, addiction recovery and anti-ageing.
Safety profile
Infusion-site reactions, flushing, nausea, chest tightness and headache are commonly reported, and are usually related to infusion rate. The bigger issue is unknown long-term safety: NAD+ affects fundamental cellular pathways including DNA repair, and there is a theoretical concern — not a demonstrated one — about effects on cell proliferation. Anyone with a cancer history should discuss this with an oncologist before starting.
Monitoring
A legitimate programme establishes a baseline before it ships anything. For NAD+, ask what will be measured before you start, at what interval it will be re-measured, and what result would indicate the treatment is not working — a provider who cannot answer the last question has no plan for stopping.
Questions to ask
- Is the NAD+ compounded, and by which state-licensed pharmacy?
- What is the concentration and total dose per infusion?
- What specific outcome are we targeting, and how will we measure it?
- What is the evidence for that outcome in humans, not mice?
- What is the total cost including infusion time and follow-up?
Questions to ask about the pharmacy
The pharmacy matters more than the telehealth brand on the front of the website. The telehealth company arranges the consultation; the pharmacy makes the medicine you inject.
- Which specific pharmacy will fill my prescription? Not "our network" — the name of the facility.
- Is it a 503A state-licensed pharmacy or a 503B FDA-registered outsourcing facility? These are different regulatory categories with different oversight, and a company can use both for different products.
- In which state is it licensed, and can I look up the licence? State boards of pharmacy publish licensee databases.
- What is the exact salt form and concentration? Semaglutide sodium and semaglutide acetate are not the same active ingredient as the semaglutide base in approved products, and the FDA has said they are not appropriate for compounding.
- Is the vial single-dose or multi-dose? A multi-dose vial requires you to measure each dose yourself, which is the most common source of the dosing errors behind reported adverse events.
- Will you provide a certificate of analysis?
- Has the pharmacy received any FDA warning letter or state board action?
A provider that answers all seven in writing is demonstrating something real. A provider that will not name its pharmacy has given you an answer, whether it intended to or not.
Frequently asked questions
What does NAD+ cost through telehealth?
We have not verified a price and will not publish one we cannot substantiate. This page gives you the method to evaluate any quote you are given.
Is NAD+ FDA-approved?
NAD+ is not FDA-approved for any of the uses it is commonly marketed for. Injectable and intravenous NAD+ preparations are compounded products, which the FDA does not review for safety, effectiveness or quality before marketing. Oral NAD+ precursors such as nicotinamide ri
Does NAD+ work?
The honest summary: the biology is real and the clinical evidence is thin. NAD+ levels do decline with age, and that decline is genuinely implicated in mitochondrial dysfunction — this is well-established cell biology. What has not been established is that supplemen
Sources
- U.S. Food and Drug Administration — approved labels and compounding guidance for this molecule.
- PubMed / NIH — indexed human clinical literature.
- ClinicalTrials.gov — registered trials, where they exist.
- Our source hierarchy and pricing-verification methodology.