Legal status · United States
Is Niacin legal in the United States?
Written by Aaron CuhaReviewed Sep 2026
Direct answer
Yes. Niacin is an approved medicine in the United States. Its legal category is "FDA-approved prescription cholesterol drug, also sold over the counter as a supplement". The approval covers the use on its label. It is given out on prescription, not sold over the counter. Products labeled "research use only" are not covered by that approval, and that label does not make them legal to use in people. On the evidence, 2 completed human trials are cited on its profile.
- People given it
- 29,087
- Found nothing
- 0
Legal category
FDA-approved prescription cholesterol drug, also sold over the counter as a supplement
Guidelines no longer advise it to prevent heart disease, after AIM-HIGH and HPS2-THRIVE. Supplement doses of nicotinic acid are still freely sold.
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.
Niacin in the United States at a glance
| Legal category | FDA-approved prescription cholesterol drug, also sold over the counter as a supplement |
|---|---|
| Note | Guidelines no longer advise it to prevent heart disease, after AIM-HIGH and HPS2-THRIVE. Supplement doses of nicotinic acid are still freely sold. |
| FDA approval status | Slow-release nicotinic acid is an FDA-approved prescription cholesterol drug in the United States. But doctors mostly stopped using it after two large studies, AIM-HIGH and HPS2-THRIVE. Lower-dose nicotinic acid is also sold over the counter as a supplement. The mix of slow-release niacin and laropiprant tested in HPS2-THRIVE was pulled from sale worldwide after that study reported. |
| Studies in people | 5 of 6 sources on the profile |
| Reviewed | Sep 2026 |
The legal category and note come from the Niacin profile. We checked them against U.S. Food and Drug Administration (FDA) listings on the reviewed date.
What this means
- 01
FDA has approved Niacin for at least one use named on its label. So a proper pharmacy-grade product exists in the United States, and pharmacies hand it out on prescription.
- 02
Approval covers only the uses named on the label. Any other use is a prescriber's call. The approval itself does not cover it.
- 03
Unlicensed vials sold online, including those labeled "research use only", are not the approved product. The approval does not cover them.
What Niacin is
The only NAD-pathway product ever tested against real heart outcomes, in 25,673 people in HPS2-THRIVE and 3,414 in AIM-HIGH. It moved every blood fat it was meant to move. It prevented no heart attacks or strokes in either study. In HPS2-THRIVE it caused extra serious side effects, including infections and bleeding.
If you want to see why a moving blood number is not proof, study this one. Nothing else sold for longevity has been tested this hard against outcomes that matter.
How it works: Niacin gets turned into NAD by its own route, called the Preiss-Handler pathway, not the NAMPT recycling route. That is why it is a strong NAD booster.
Approval history: Slow-release nicotinic acid is an FDA-approved prescription cholesterol drug in the United States. But doctors mostly stopped using it after two large studies, AIM-HIGH and HPS2-THRIVE. Lower-dose nicotinic acid is also sold over the counter as a supplement. The mix of slow-release niacin and laropiprant tested in HPS2-THRIVE was pulled from sale worldwide after that study reported.
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 Niacin 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.
Niacin in sport and the military
Whether Niacin 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 Niacin 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.
Niacin in other countries
United Kingdom
Not approvedAvailable as a supplement; the slow-release niacin plus laropiprant product was withdrawn
Is Niacin legal in the United Kingdom?Australia
Not approvedAvailable as a supplement; prescription cholesterol use largely abandoned
Is Niacin legal in Australia?Canada
Not approvedPrescription slow-release product was once available; also sold as a supplement
Is Niacin legal in Canada?Frequently asked questions
Is Niacin legal in the United States?
Yes. Niacin is an approved medicine in the United States. Its legal category is "FDA-approved prescription cholesterol drug, also sold over the counter as a supplement". The approval covers the use on its label. It is given out on prescription, not sold over the counter. Products labeled "research use only" are not covered by that approval, and that label does not make them legal to use in people. On the evidence, 2 completed human trials are cited on its profile. Note: Guidelines no longer advise it to prevent heart disease, after AIM-HIGH and HPS2-THRIVE. Supplement doses of nicotinic acid are still freely sold.
Can I buy Niacin in the United States?
Only with a prescription. In the United States, Niacin has the legal category "FDA-approved prescription cholesterol drug, also sold over the counter as a supplement". Pharmacies hand it out with a prescription, for the use it is approved for. Buying it from unlicensed sellers online, or as a "research chemical", is outside that system. You get none of the protection the regulator gives. Note: Guidelines no longer advise it to prevent heart disease, after AIM-HIGH and HPS2-THRIVE. Supplement doses of nicotinic acid are still freely sold.
Is Niacin FDA approved?
Yes. FDA status: Slow-release nicotinic acid is an FDA-approved prescription cholesterol drug in the United States. But doctors mostly stopped using it after two large studies, AIM-HIGH and HPS2-THRIVE. Lower-dose nicotinic acid is also sold over the counter as a supplement. The mix of slow-release niacin and laropiprant tested in HPS2-THRIVE was pulled from sale worldwide after that study reported.. Current US legal category: "FDA-approved prescription cholesterol drug, also sold over the counter as a supplement". On the evidence, 2 completed human trials are cited on its profile.
Related compounds in the United States
Full research profile
How Niacin works, the studies we cite, FDA status and the full legal summary are all on its compound profile.
Niacin profileThis page is general information about the legal status of Niacin 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.