Legal status · United States
Is ACE-031 legal in the United States?
No. ACE-031 is not an approved medicine in the United States; its classification is "Not approved; research use only". Nothing containing it is authorized for any use in people. Vials labeled "for research use only" are not exempt: that label does not make human use lawful. Human evidence: Preliminary.
ACE-031 in the United States at a glance
| Classification | Not approved; research use only |
|---|---|
| FDA approval status | Not FDA-approved; development halted on safety grounds |
| Evidence level | Preliminary (research strength: Preliminary) |
| Reviewed | Sep 2026 |
Classification and note come from the ACE-031 profile, checked against U.S. Food and Drug Administration (FDA) listings at the reviewed date.
What this means
- 01
No product containing ACE-031 is approved by FDA for any use in the United States, so nothing on the market is authorized for people.
- 02
"Research use only" is a vendor label, not a legal category that permits human use. It does not exempt a product from medicines law.
- 03
Importing, supplying or promoting it for human use can fall under medicines legislation in the United States. This page is general information, not legal advice.
What ACE-031 is
A myostatin/activin decoy studied for muscular dystrophy whose trials were halted over vascular safety signals.
ACE-031 is a soluble form of the activin receptor type IIB that acts as a decoy, trapping myostatin and related factors to promote muscle growth. It was studied for Duchenne muscular dystrophy, but trials were halted in 2011 after signals including nosebleeds and small vessel changes.
Mechanism: Binds and neutralizes myostatin and activin before they can signal, releasing their inhibition of muscle growth.
Regulatory history: Not FDA-approved; development halted on safety grounds
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 ACE-031 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.
ACE-031 in other countries
Frequently asked questions
Is ACE-031 legal in the United States?
No. ACE-031 is not an approved medicine in the United States; its classification is "Not approved; research use only". Nothing containing it is authorized for any use in people. Vials labeled "for research use only" are not exempt: that label does not make human use lawful. Human evidence: Preliminary.
Can I buy ACE-031 in the United States?
No approved product exists to buy. In the United States ACE-031 is classified as "Not approved; research use only", 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 ACE-031 FDA approved?
No. FDA status: Not FDA-approved; development halted on safety grounds. Current US classification: "Not approved; research use only". Evidence level: Preliminary.
Related compounds in the United States
Full research profile
Mechanism, cited studies, FDA status and the full legal summary for ACE-031 live on its compound profile.
ACE-031 profileThis page is general information about the regulatory status of ACE-031 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.