What the evidence says. Graded none: a 2026 systematic review found no outcome trials of IV or intramuscular NAD+ for anti-ageing or wellness; human data are a pharmacokinetic pilot, a clinic chart review and case reports, and the only RCT tested a tiny hospital dose in heart failure. (No Evidence evidence: No credible human evidence supports the marketed claims — widely considered ineffective.)
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Health warning. IV NAD+ is an unapproved, pharmacy-compounded product sold for hundreds of dollars a session; no controlled trial shows it slows ageing, boosts energy or treats addiction, and fast drips commonly cause nausea, cramping and chest tightness.
What is NAD+ Infusions & Injections?
NAD+ Infusions & Injections (Nicotinamide adenine dinucleotide (IV / IM / subcutaneous / nasal)) is a longevity supplement marketed for slower ageing and 'cellular repair'. NutriDex grades the human evidence as No Evidence. NAD+ is a coenzyme every cell uses for energy metabolism and DNA repair. Oral precursors (NMN, NR) have their own entries; this one covers NAD+ itself given by IV drip, injection or nasal spray, a fast-growing wellness-clinic service costing roughly $250–1,500 per infusion. Infused NAD+ is largely broken down outside cells before its parts are taken up. In a small 2019 pilot, a 6-hour infusion produced no rise in blood NAD+ for the first 2 hours, as the body rapidly cleared it. A 2026 systematic review of 113 studies found no controlled trials of IV or injected NAD+ for ageing or wellness outcomes. A 2026 clinic chart review found NAD+ drips caused moderate-to-severe gut symptoms, raised heart rate and chest pressure, stretching infusions to about 97 minutes. The only randomised trial, in 180 Chinese heart-failure patients, used just 10 mg/day for a week and reported a 3-point better ejection fraction, with no significant cut in cardiac events — not evidence for wellness drips.
Marketed Claims (unproven)
✕(Claimed) slower ageing and 'cellular repair'
✕(Claimed) more energy, focus and faster recovery
✕(Claimed) easing addiction withdrawal
✕Raises blood NAD+ and its breakdown products briefly
Dosing & Compounds
Use & Legality
No evidence-based dose exists; clinics typically infuse 250–1,000 mg IV over 1–4 hours or sell 50–200 mg subcutaneous shots, while the one positive medical RCT used just 10 mg/day IV for 7 days.
Rapid IV infusion commonly causes nausea, abdominal cramping, flushing, headache, raised heart rate and chest tightness, which is why clinics slow drips to 1–4 hours; injections add site pain and the usual IV risks of infection, vein irritation and bruising. No NAD+ infusion or injection is FDA-approved for wellness use — clinic products are compounded by pharmacies without FDA review of efficacy, and long-term safety is unknown. Interactions are not well studied; people with heart disease, pregnancy or cancer should avoid unsupervised use, and athletes should note that IV infusions over 100 mL per 12 hours are prohibited by WADA outside hospital care. Educational only — always check with your doctor or pharmacist before combining NAD+ Infusions & Injections with any medicine.
Common questions about NAD+ Infusions & Injections
What is NAD+ Infusions & Injections used for?
NAD+ Infusions & Injections is most often marketed for (Claimed) slower ageing and 'cellular repair', (Claimed) more energy, focus and faster recovery, (Claimed) easing addiction withdrawal, Raises blood NAD+ and its breakdown products briefly. Pricey clinic drips of NAD+ — no trials show anti-ageing benefit.
Does NAD+ Infusions & Injections work — what does the evidence say?
No Evidence evidence. No credible human evidence supports the marketed claims — widely considered ineffective. NAD+ is a coenzyme every cell uses for energy metabolism and DNA repair. Oral precursors (NMN, NR) have their own entries; this one covers NAD+ itself given by IV drip, injection or nasal spray, a fast-growing wellness-clinic service costing roughly $250–1,500 per infusion. Infused NAD+ is largely broken down outside cells before its parts are taken up. In a small 2019 pilot, a 6-hour infusion produced no rise in blood NAD+ for the first 2 hours, as the body rapidly cleared it. A 2026 systematic review of 113 studies found no controlled trials of IV or injected NAD+ for ageing or wellness outcomes. A 2026 clinic chart review found NAD+ drips caused moderate-to-severe gut symptoms, raised heart rate and chest pressure, stretching infusions to about 97 minutes. The only randomised trial, in 180 Chinese heart-failure patients, used just 10 mg/day for a week and reported a 3-point better ejection fraction, with no significant cut in cardiac events — not evidence for wellness drips.
What is the typical dose of NAD+ Infusions & Injections?
No evidence-based dose exists; clinics typically infuse 250–1,000 mg IV over 1–4 hours or sell 50–200 mg subcutaneous shots, while the one positive medical RCT used just 10 mg/day IV for 7 days.
Is NAD+ Infusions & Injections safe? Any cautions or side effects?
Rapid IV infusion commonly causes nausea, abdominal cramping, flushing, headache, raised heart rate and chest tightness, which is why clinics slow drips to 1–4 hours; injections add site pain and the usual IV risks of infection, vein irritation and bruising. No NAD+ infusion or injection is FDA-approved for wellness use — clinic products are compounded by pharmacies without FDA review of efficacy, and long-term safety is unknown. Interactions are not well studied; people with heart disease, pregnancy or cancer should avoid unsupervised use, and athletes should note that IV infusions over 100 mL per 12 hours are prohibited by WADA outside hospital care.
How many studies support NAD+ Infusions & Injections?
NutriDex cites 6 sources for NAD+ Infusions & Injections, graded "No Evidence".
Cite this page
APA
Peh, D. (2026). NAD+ Infusions & Injections (Nicotinamide adenine dinucleotide (IV / IM / subcutaneous / nasal)): Benefits, Dosage, Side Effects & Evidence. NutriDex — The Supplement Research Compendium. Retrieved 18 Oct 2026, from https://nutridex.info/s/nad-iv
BibTeX
@misc{nutridex_nad_iv,
author = {Peh, Daryl},
title = {NAD+ Infusions \& Injections (Nicotinamide adenine dinucleotide (IV / IM / subcutaneous / nasal)): Benefits, Dosage, Side Effects \& Evidence},
year = {2026},
howpublished = {NutriDex --- The Supplement Research Compendium},
url = {https://nutridex.info/s/nad-iv},
note = {Reviewed by Dr Daryl Peh, MBBS Singapore, MMed FM. Accessed 2026-10-18}
}
For medical claims, citing the underlying primary studies linked above is preferred. NutriDex is an educational reference, not medical advice.