Healing, hormones & brain
DSIP
Delta sleep-inducing peptide
A 1970s 'sleep peptide' whose effects in humans were inconsistent.
Peptide · 9 amino acids
Small human studies
What it is
A 9-amino-acid peptide first isolated in 1977 from the blood of rabbits in induced deep sleep.
How it's thought to work
Its mechanism remains unclear. No dedicated receptor has been identified.
What the evidence shows
Small human studies in the 1980s gave inconsistent results on sleep. There is little modern research.
Regulatory status
Not approved for any use.
Safety notes
Human safety data are limited and dated.
Key sources
- Kovalzon VM, Strekalova TV. Delta sleep-inducing peptide (DSIP): a still unresolved riddle. J Neurochem. 2006.
Educational summary only, not medical advice. Gtides does not sell or link to sellers of DSIP or any other product. Products sold as “research peptides” are not approved medicines, and their contents, purity and sterility are not verified.