Sleep
DSIP
A naturally occurring nonapeptide first isolated from the brain of sleeping rabbits and named for its early association with delta-wave (deep) sleep. Studied for sleep, stress, and neuromodulatory effects, but the evidence is old, mixed, and inconsistent, and its mechanism remains poorly defined.
Common doses
| Indication | Route | Dose | Duration | Evidence |
|---|---|---|---|---|
| Sleep / stress (experimental, off-label) | SC injection | No established dose; community use varies, often before sleep | Experimental | Tier 5 |
Limitations · Who should NOT use this
Despite the evocative name, the evidence that DSIP reliably improves sleep is weak and inconsistent, with much of it dating to older studies that have not been replicated in modern controlled trials. Mechanism is poorly defined. No robust human efficacy or safety data by current standards. Sleep is far better addressed by behavioral and well-evidenced means first. Gray-market sourcing with no oversight.
Regulatory notes
Not FDA-approved. Researched since the 1970s–80s without translating into an approved product. Available through research-chemical channels. No standardized clinical dosing for sleep.
Verify what's actually in your DSIP vial
Gray-market peptide vials vary widely on identity, purity, and labeled concentration. Finnrick is an independent testing platform that ships consumer-submitted samples to commercial labs and publishes every result in a free public database. Vendors cannot pay for placement or to suppress a result. We don't operate Finnrick — we link to it because post-purchase verification is the right complement to pre-purchase clinical evidence.
Finnrick is independent; we receive no compensation for this link. US-resident free testing as of May 2026.
Sources
- Graf MV, Kastin AJ. Delta-sleep-inducing peptide (DSIP): a review. Neurosci Biobehav Rev 1984;8(1):83-93.
- Schneider-Helmert D, Schoenenberger GA. Effects of DSIP in man: multifunctional psychophysiological properties. Neuropsychobiology 1983.
- Kovalzon VM, Strekalova TV. Delta sleep-inducing peptide (DSIP): a still unresolved riddle. J Neurochem 2006.
Community signal — DSIP
Recent posts and videos mentioning DSIP from the cron-ingested Reddit + Bluesky pipelines and the curated /experts directory. Not endorsement — directional context only.
No Bluesky posts mentioning DSIP in our index yet — the Bluesky cron pulls every four hours.
No curated experts have DSIP tagged in their peptideAreas yet.
No YouTube videos mentioning DSIP in our index yet. The YouTube RSS cron pulls every 6 hours.
Community Notes
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