Short answer: NAD+ is a molecule every cell uses to turn food into energy, and some studies suggest levels fall with age. Supplements that raise it do raise blood levels, but trials in older adults haven't shown clear benefits, and there are no outcome trials of NAD+ injections. If you try it, do so with a physician and realistic expectations.
What NAD+ is
NAD+ (nicotinamide adenine dinucleotide) is a coenzyme that helps cells run the chemical reactions behind energy metabolism. Enzymes involved in cell repair and signalling also use it. Reviews describe NAD+ levels falling with age, but much of that evidence comes from animals, and human studies are small and don't all agree.
What the human evidence shows
- Oral precursors. Nicotinamide riboside and NMN raise NAD+ in the blood. In a 2018 trial of 24 adults aged 55 to 79, six weeks of nicotinamide riboside was well tolerated and raised NAD+. A 2021 NMN trial in 25 women with prediabetes improved muscle insulin sensitivity but not body composition or blood pressure.
- Older adults. A 2025 analysis of 10 placebo-controlled trials in adults aged 60 and over found no significant effect on muscle mass or function.
- Infusions and injections. Small studies have measured how the body handles IV NAD+, but none has tested clinical outcomes, and there are no published human studies of injections under the skin or into muscle.
Status and safety
- Not FDA-approved. NAD+ isn't approved for any use. It's compounded by licensed pharmacies, and FDA lists it among bulk substances still under evaluation for compounding.
- Side effects. With IV infusions, nausea, stomach cramps, headache, anxiety, chest pressure and a faster heart rate have been reported, usually easing when the infusion slows or stops. Published data on injections are limited.
- Coverage. Medicare and most insurers don't pay for NAD+ for general wellness; it's cash-pay. On Medicare and wondering about GLP-1s? See what Medicare covers.
If you'd like to try it
A licensed physician reviews your intake and medications and decides whether NAD+ is appropriate. Tell them about any heart, liver or kidney conditions. Adults 60 and over can verify with VerifyPass for 10% off their first order and every refill.
See NAD+ injections for full details.
Common questions
Does NAD+ slow or reverse ageing?
Is NAD+ FDA-approved?
What are the side effects of NAD+?
Does Medicare cover NAD+ injections?
Related
- Does Medicare cover Wegovy or Zepbound?
- Does TRICARE cover Wegovy or Zepbound?
- VA weight loss medication
- FEP Blue and FEHB coverage
- Weight loss on night shift
- Training clients on GLP-1s
- TRICARE and VA testosterone coverage
- Shift work and low testosterone
- Sermorelin: evidence and drug-testing rules
- All verified discounts
Cash-pay service. Goprolean is a cash-pay service. We don't bill Medicare, Medicaid, TRICARE, the VA, the Federal Employees Health Benefits Program or any insurer, and nothing you buy here is submitted to a government health program. The verified-community discount is a cash discount on Goprolean's own prices. It isn't insurance and can't be combined with other offers.
No affiliation. Goprolean isn't affiliated with or endorsed by Medicare/CMS, the Department of Defense, TRICARE, the Department of Veterans Affairs, OPM, any employer or any health plan. Eligibility is verified by VerifyPass.
Coverage information is general, was checked on 8 November 2026, and plans change. Ask your plan about your own coverage.
Compounded medication. NAD+ is prepared by a licensed pharmacy for an individual patient. It is not FDA-approved for any use, and compounded medications have not been reviewed by the FDA for safety or effectiveness. NAD+ is not intended to diagnose, treat, cure or prevent any disease, and is not prescribed for anti-ageing.
Physician review. Prescriptions are issued only after a medical intake is reviewed by a licensed physician, who may determine that treatment is not appropriate, in which case the order is cancelled and you're refunded in full. Individual results vary. Pay over time with Klarna, subject to approval.
Goprolean is the telehealth and pharmacy service of Prolean Wellness, Scottsdale, Arizona. Is Goprolean legitimate? · How we handle health information · Privacy · Terms