Peptide library / Bones & muscles / ACE-031
ACE-031
A decoy receptor tested for muscle diseases, stopped after bleeding side effects.
Effects studied or claimed
What it is used or promoted for, and where each effect has actually been seen
- Muscle growth in Duchenne muscular dystrophySmall human studies
How it is thought to work
ACE-031 captured myostatin and related proteins to allow muscle growth, but also affected other signaling.
What the evidence shows
Early trials showed small gains in lean mass in healthy women, but a trial in boys with Duchenne was stopped in 2010.
Safety and unknowns
Nosebleeds and gum bleeding led to trial suspension.
Regulatory status
Not approved. Development ended.
Regulatory status changes quickly. This entry was last reviewed on 27 October 2026. Confirm current status with the FDA before relying on it.
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General information, not medical advice. Do not buy or inject unregulated peptides.