Legal status · United States
Is Enobosarm legal in the United States?
No. Enobosarm is not approved for any medical use in the United States; its classification is "Investigational; SARMs are not legal dietary ingredients and are on the WADA prohibited list". Lawful access is limited to registered clinical trials. "Research use only" labeling on vials sold online does not make human use lawful. Human evidence to date: Moderate.
Enobosarm in the United States at a glance
| Classification | Investigational; SARMs are not legal dietary ingredients and are on the WADA prohibited list |
|---|---|
| FDA approval status | Investigational; not approved for any use. Unapproved SARM products are illegal to sell as supplements. |
| Evidence level | Moderate (research strength: Moderate) |
| Reviewed | Sep 2026 |
Classification and note come from the Enobosarm profile, checked against U.S. Food and Drug Administration (FDA) listings at the reviewed date.
What this means
- 01
Enobosarm is being studied in registered clinical trials but has not received FDA marketing approval in the United States.
- 02
Lawful human access is limited to trial participation or a formal early-access scheme where one exists; there is no pharmacy product to prescribe.
- 03
Vials sold online "for research use only" are not trial material, and that label does not make human use lawful.
What Enobosarm is
The selective androgen receptor modulator known on the gray market as ostarine, now in formal trials where 3 mg cut lean-mass loss on semaglutide by 71% in adults over 60.
Enobosarm activates the androgen receptor selectively in muscle and bone. It failed earlier programs in cancer cachexia and is widely misused as an unapproved SARM.
Mechanism: Tissue-selective androgen receptor agonism that promotes muscle protein synthesis with less androgenic effect on prostate and skin than testosterone.
Regulatory history: Investigational; not approved for any use. Unapproved SARM products are illegal to sell as supplements.
How FDA treats this kind of product
Approves prescription drugs by indication and polices unapproved products, including peptides sold online. Compounding pharmacies may prepare some compounds under a prescription when the FDA places them on a permitted bulk-substances category.
The classification above is the The Longevity Archive reading of U.S. Food and Drug Administration listings for Enobosarm at the reviewed date, not a legal opinion. Rules change, and importing, prescribing and possessing a compound can each be treated differently. Check the regulator directly before acting on anything here.
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 classification is "Investigational; SARMs are not legal dietary ingredients and are on the WADA prohibited list". Lawful access is limited to registered clinical trials. "Research use only" labeling on vials sold online does not make human use lawful. Human evidence to date: Moderate.
Can I buy Enobosarm in the United States?
No approved product exists to buy. In the United States Enobosarm is classified as "Investigational; SARMs are not legal dietary ingredients and are on the WADA prohibited list", so there is no licensed pharmacy product. Vendors selling it "for research use only" are not selling it for human use, and that label does not change its legal status. This site does not list or recommend vendors.
Is Enobosarm FDA approved?
No. FDA status: Investigational; not approved for any use. Unapproved SARM products are illegal to sell as supplements.. Current US classification: "Investigational; SARMs are not legal dietary ingredients and are on the WADA prohibited list". Evidence level: Moderate.
Related compounds in the United States
Full research profile
Mechanism, cited studies, FDA status and the full legal summary for Enobosarm live on its compound profile.
Enobosarm profileThis page is general information about the regulatory status of Enobosarm in the United States, current as of Sep 2026. It is not legal advice, and classifications change; check U.S. Food and Drug Administration directly or consult a lawyer for a specific situation. Educational use only. This database summarizes published research. It is not medical advice and contains no dosing protocols or recommendations for personal use. The Longevity Archive has no vendor relationships and does not recommend where to buy anything.