- For
- Deep sleep and stress-related sleep
- Form
- SubQ injection (before bed)
- Dose
- 100-300 mcg / night
- Cycle
- 5-10 nights, not continuous
- Safety
- Avoid in pregnancy; not for long-term daily use
- Legal
- Research peptide, not FDA-approved
Bottom line: A 1977 sleep peptide whose core claim hasn't held up over decades. Mostly here so you know to skip it.
Safety at a glance
- Status: Not FDA-approved; research peptide. Evidence is weak.
- Evidence: Weak; foundational sleep claim unreplicated over decades.
- Do not use if: you are unsure - the foundational claims have not held up; clear it with a doctor.
- Not medical advice - decide this with a licensed physician.
What it does - plain English
DSIP is a nine-amino-acid peptide first identified by Swiss researchers in 1977. They isolated it from the cerebral blood of sleeping rabbits during the slow-wave (deep sleep) phase, when the slow brain waves dominate the EEG. The original hypothesis: this peptide is what triggers or maintains deep sleep.
The research community has explored uses for sleep disorders, withdrawal symptoms, stress regulation, and pain. The catch: the foundational claim - that DSIP triggers deep sleep - has been hard to replicate convincingly in human trials. After almost five decades, the evidence base is still thin.
What people use it for
A Watch-tier sleep peptide. Where people aim it:
Status
Watch. DSIP is the most "what could have been" peptide on this list. The original Swiss work was rigorous; subsequent attempts to confirm sleep-induction have produced mixed results. The peptide community treats it as a niche tool for stress-related sleep disruption, not a primary sleep aid.
Better-studied paths exist for most sleep complaints.
Legal status
Not FDA-approved. Same research-peptide gray zone as BPC-157, TB-500, and the Russian cognitive peptides. Compounding pharmacies almost never dispense it. Almost all US sourcing is via research peptide vendors.
Where to source
Research peptide vendors with COA (Certificate of Analysis - a third-party lab report verifying purity). DSIP has lower demand than recovery and weight-loss peptides, so vendor quality varies more.
Stick to vendors who post recent batch COAs and have a track record. The "lab-grade" certification claim isn't enough; ask for the actual document.
New to peptides? Start with the foundations ->
Two studies worth reading
The original Swiss isolation paper
Schoenenberger & Monnier, Proceedings of the National Academy of Sciences
The 1977 paper that named DSIP and proposed it as a sleep-inducing factor. Foundational reading; also a useful example of the gap between a first finding and a confirmed clinical effect.
A more skeptical mechanism review
Kovalzon & Strekalova, Journal of Neurochemistry
A review covering decades of follow-up work and what remains unclear about DSIP's actual function. Useful for an honest assessment of where the evidence sits - including the lack of consistent sleep-induction findings in human trials.
Last reviewed · 2026·05·04 · Status reviewed weekly