Legal status · United States
Is Enobosarm legal in the United States?
Written by Aaron CuhaReviewed Sep 2026
Direct answer
No. Enobosarm is not approved for any medical use in the United States. Its legal category is "Investigational; SARMs are not legal supplement ingredients and are banned in sport (WADA)". The only legal way to get it is to join a registered clinical trial (an official study in people). A "research use only" label on vials sold online does not make them legal to use in people. On the evidence, 1 completed human trial is cited on its profile.
- People given it
- 159
- Found nothing
- 1
Legal category
Investigational; SARMs are not legal supplement ingredients and are banned in sport (WADA)
FDA approval and compounding status, from the Enobosarm profile.
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.
Enobosarm in the United States at a glance
| Legal category | Investigational; SARMs are not legal supplement ingredients and are banned in sport (WADA) |
|---|---|
| FDA approval status | Investigational; not approved for any use. SARMs are lab-made drugs that act like testosterone. Unapproved SARM products are illegal to sell as supplements. |
| Studies in people | 3 of 3 sources on the profile |
| Reviewed | Sep 2026 |
The legal category and note come from the Enobosarm profile. We checked them against U.S. Food and Drug Administration (FDA) listings on the reviewed date.
What this means
- 01
Enobosarm is being tested in registered clinical trials (official studies in people). FDA has not approved it for sale in the United States.
- 02
The only legal ways for a person to get it are to join a trial, or to use an official early-access program where one exists. There is no pharmacy product to prescribe.
- 03
Vials sold online "for research use only" are not trial supplies. That label does not make them legal to use in people.
What Enobosarm is
The drug sold on the grey market as ostarine. In proper studies, 3 mg added to semaglutide cut muscle loss by 71 percent in adults over 60.
Enobosarm switches on the androgen (male hormone) receptor, mainly in muscle and bone. It failed earlier programs in cancer-related muscle wasting.
How it works: It switches on the androgen receptor mostly in muscle and bone. That helps build muscle protein, with less effect on the prostate and skin than testosterone.
Approval history: Investigational; not approved for any use. SARMs are lab-made drugs that act like testosterone. Unapproved SARM products are illegal to sell as supplements.
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 Enobosarm 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.
Enobosarm in sport and the military
Whether Enobosarm 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 Enobosarm 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.
Enobosarm in other countries
United Kingdom
Not approvedNot licensed; sale for human use is unlawful
Is Enobosarm legal in the United Kingdom?Australia
Prescription routeSchedule 4 (prescription only); not approved
Is Enobosarm legal in Australia?Canada
Not approvedNot approved; not authorized for sale
Is Enobosarm legal in Canada?Frequently asked questions
Is Enobosarm legal in the United States?
No. Enobosarm is not approved for any medical use in the United States. Its legal category is "Investigational; SARMs are not legal supplement ingredients and are banned in sport (WADA)". The only legal way to get it is to join a registered clinical trial (an official study in people). A "research use only" label on vials sold online does not make them legal to use in people. On the evidence, 1 completed human trial is cited on its profile.
Can I buy Enobosarm in the United States?
There is no approved product to buy. In the United States, Enobosarm has the legal category "Investigational; SARMs are not legal supplement ingredients and are banned in sport (WADA)". So no licensed pharmacy product exists. Sellers who list it "for research use only" are not selling it for use in people, and that label does not change its legal status. 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.
Is Enobosarm FDA approved?
No. FDA status: Investigational; not approved for any use. SARMs are lab-made drugs that act like testosterone. Unapproved SARM products are illegal to sell as supplements.. Current US legal category: "Investigational; SARMs are not legal supplement ingredients and are banned in sport (WADA)". On the evidence, 1 completed human trial is cited on its profile.
Related compounds in the United States
Full research profile
How Enobosarm works, the studies we cite, FDA status and the full legal summary are all on its compound profile.
Enobosarm profileThis page is general information about the legal status of Enobosarm 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.