Isolated in 1977 from the cerebral venous blood of rabbits during induced sleep, and named for that observation. No receptor has ever been identified, and no coherent mechanism has been established in nearly five decades. It crosses the blood-brain barrier, but what it does there remains unresolved.
The scientific record is thin and largely dated. Small studies from the 1980s reported inconsistent effects on sleep, and subsequent work has not clarified the picture. Modern interest is driven by marketing rather than any accumulation of evidence. Among the least substantiated entries in this library.
Not FDA-approved. No approved product anywhere.
No meaningful safety data in either direction.
Forge Bioenergy does not publish dosing, reconstitution, or administration protocols for any peptide. See our editorial policy for why. If you are considering any substance on this page, that conversation belongs with a licensed physician.
Regulatory status changes. This page reflects our reading of public sources as of July 2026 and should be independently verified before it is relied upon.