What Is DSIP?
DSIP (Delta Sleep-Inducing Peptide) is a 9-amino-acid neuropeptide first isolated from rabbit brain tissue in 1977. Its name comes from its original discovery context — it was found to promote delta-wave (deep) sleep in animal models. DSIP has since been studied across a broader range of applications beyond sleep.
Despite its name, DSIP's mechanisms are complex and not fully understood. It appears to act as a "sleep modulator" rather than a sedative, with effects on stress hormones, pain perception, and circadian rhythm that go beyond simple sleep induction.
Quick Facts
| Property | Detail |
|---|---|
| Amino Acids | 9 (Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu) |
| Molecular Weight | ~849 Da |
| Origin | Isolated from rabbit brain tissue (1977) |
| Regulatory Status | Expected Category 1 reclassification |
| Prescription Required | Yes (pharmacy); No (research vendor) |
Research Areas of Interest
- Sleep regulation — studied for effects on delta-wave (deep) sleep patterns and sleep architecture
- Stress response — research suggests it may modulate cortisol and ACTH levels
- Pain perception — some preclinical data on analgesic effects
- Circadian rhythm — may influence the body's internal clock and sleep-wake cycles
- Withdrawal and addiction — limited research on opioid and alcohol withdrawal symptoms
How It's Sold
| Source | Form | Prescription? | Typical Cost |
|---|---|---|---|
| Research Vendors | Lyophilized powder (5mg vial) | No | $20-50/vial |
| Compounding Pharmacy | Injectable (subcutaneous) | Yes | $80-200/month |
| Compounding Pharmacy | Nasal spray | Yes | $80-180/month |
What to Look For on the COA
- HPLC purity — minimum 95%, ideally 98%+
- Mass spectrometry — confirmed MW of ~849 Da
- Endotoxin testing — required for injectable forms
- Amino acid analysis — confirms the 9-amino-acid sequence
- Batch/lot number — must match product label
Storage Guide
- Lyophilized: Store at 2-8°C short-term; -20°C for long-term stability
- Reconstituted: Refrigerate immediately. Use within 14-21 days
- DSIP is relatively fragile — handle carefully and avoid repeated freeze/thaw cycles
Key Sourcing Tips
- Always request and verify the COA — batch numbers must match your product label
- DSIP is moderately sized (9aa) and reasonably priced — be skeptical of both extremely cheap and extremely expensive sources
- Nasal spray and injectable are the most common delivery forms — if buying nasal spray, verify sterility testing
- Research on DSIP is older (1970s-1990s) with fewer modern studies — be cautious of vendors overclaiming effects
- For personal use: work with a licensed provider and compounding pharmacy
- Avoid any source marketing DSIP as a "sleep drug" — it is not FDA-approved for any indication