Legal status · United States
Is NRPT legal in the United States?
Written by Aaron CuhaReviewed Sep 2026
Direct answer
NRPT can be sold in the United States as a supplement or cosmetic ingredient. Its legal category is "Sold as a supplement". That is not approval as a drug. FDA has not checked any health claim made for it. Versions you inject, and "research use only" versions, fall outside supplement rules, so that label does not make them legal to use in people. On the evidence, 3 completed human trials are cited on its profile.
- People given it
- 176
- Found nothing
- 2
Legal category
Sold as a supplement
Sold as a dietary supplement. The published trials tested it as a supplement, not as a drug, and no health claim has been approved.
Reviewed Sep 2026. This is a legal category, not legal advice.
A "research use only" label on a vial does not make it legal to use on people.
NRPT in the United States at a glance
| Legal category | Sold as a supplement |
|---|---|
| Note | Sold as a dietary supplement. The published trials tested it as a supplement, not as a drug, and no health claim has been approved. |
| FDA approval status | Sold as a dietary supplement in the United States. Not approved as a drug for any use. Nicotinamide riboside chloride has new supplement ingredient safety filings with the FDA, and is generally recognised as safe for certain uses. Pterostilbene is also sold as a supplement ingredient. |
| Studies in people | 3 of 4 sources on the profile |
| Reviewed | Sep 2026 |
The legal category and note come from the NRPT profile. We checked them against U.S. Food and Drug Administration (FDA) listings on the reviewed date.
What this means
- 01
NRPT can be sold in the United States as a supplement, food or cosmetic ingredient, under the legal category above. It has no approval as a drug.
- 02
Being sold as a supplement means FDA has not checked any health claim. The makers are responsible for safety and labels, and quality varies from product to product.
- 03
Versions you inject, and "research use only" versions, are not supplements. That label does not make them legal to use in people, and anything you inject falls under the rules for medicines.
What NRPT is
In 120 healthy adults aged 60 to 80, it raised NAD in whole blood by about 40 percent at the normal dose and about 90 percent at double dose, and held it there for 8 weeks. Every published NRPT study has measured blood NAD or safety. The one study that measured something in the body, muscle repair after a deliberate injury in 32 older adults, found nothing.
NRPT is a two-part supplement. One part is nicotinamide riboside, or NR, which the body turns into NAD.
How it works: Two parts, two ideas. The body turns nicotinamide riboside into NMN and then into NAD.
Approval history: Sold as a dietary supplement in the United States. Not approved as a drug for any use. Nicotinamide riboside chloride has new supplement ingredient safety filings with the FDA, and is generally recognised as safe for certain uses. Pterostilbene is also sold as a supplement ingredient.
How FDA treats this kind of product
Approves prescription drugs, each for a named use. It also acts against unapproved products, including peptides sold online. Compounding pharmacies, which mix drugs to order, may make some compounds with a prescription. That only applies when the FDA puts the compound in a category of bulk ingredients it allows.
The legal category above is how The Longevity Archive reads U.S. Food and Drug Administration listings for NRPT on the reviewed date. It is not a legal opinion. Rules change. Bringing a compound into the country, prescribing it and owning it can each be treated differently. Check with the agency before you act on anything here.
NRPT in sport and the military
Whether NRPT is banned in sport is set by the World Anti-Doping Code and by military rules, not by its legal status in the United States. Before you compete or get tested, look up NRPT by name on the Prohibited List, or look up a named product in Global DRO. Under the World Anti-Doping Code, category S0 bans, at all times, any drug-like substance that meets two tests. No other section of the List covers it. And no government health regulator anywhere has a current approval for it as a treatment in people. Many substances that are approved somewhere are banned by name in another section. So approval does not mean a substance is allowed in sport.
- WADA Prohibited List
- Global DRO (check a named product)
- USADA (US athletes)
- Operation Supplement Safety (US service members)
The rules you compete or serve under decide this, not this page.
NRPT in other countries
Frequently asked questions
Is NRPT legal in the United States?
NRPT can be sold in the United States as a supplement or cosmetic ingredient. Its legal category is "Sold as a supplement". That is not approval as a drug. FDA has not checked any health claim made for it. Versions you inject, and "research use only" versions, fall outside supplement rules, so that label does not make them legal to use in people. On the evidence, 3 completed human trials are cited on its profile. Note: Sold as a dietary supplement. The published trials tested it as a supplement, not as a drug, and no health claim has been approved.
Can I buy NRPT in the United States?
Yes, as a supplement or cosmetic. In the United States, NRPT has the legal category "Sold as a supplement". So products you swallow, put on your skin or use as a cosmetic can be sold under supplement rules. Versions you inject, and products labeled "research use only", are not supplements. They are not approved for use in people. Note: Sold as a dietary supplement. The published trials tested it as a supplement, not as a drug, and no health claim has been approved.
Is NRPT FDA approved?
No. FDA status: Sold as a dietary supplement in the United States. Not approved as a drug for any use. Nicotinamide riboside chloride has new supplement ingredient safety filings with the FDA, and is generally recognised as safe for certain uses. Pterostilbene is also sold as a supplement ingredient.. Current US legal category: "Sold as a supplement". On the evidence, 3 completed human trials are cited on its profile.
Related compounds in the United States
Full research profile
How NRPT works, the studies we cite, FDA status and the full legal summary are all on its compound profile.
NRPT profileThis page is general information about the legal status of NRPT in the United States, current as of Sep 2026. It is not legal advice. Legal status changes. For your own situation, check with U.S. Food and Drug Administration or ask a lawyer. Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use. Sellers named on the price pages are ranked by certificate tier, then price, and any affiliate income is disclosed there. Naming a seller is not a recommendation to buy or use anything.