Carl read the papersWhat it actually is
DSIP is a 9-amino-acid peptide first pulled from rabbit blood in 1977. It’s called a natural sleep peptide, but its gene has never been found, so even its normal job in the body is still unclear.
It promotes deeper sleep and fewer awakenings rather than forcing unconsciousness — and its human evidence is genuinely thin.
How it’s thought to work
- HPA/stress modulation — reported to blunt the stress-hormone (ACTH) signal, in rat work.
- Deeper sleep — fewer nighttime awakenings vs forcing sleep.
- Short half-life — breaks down fast in blood. We found no solid human half-life figure.
- Cumulative — benefits can carry into off-nights.
What the research says
Honest: human DSIP data is thin, old and mixed, and plenty of users report no effect at all. Treat community results as anecdotal. Not approved in the US or EU; in Russia a nasal DSIP product (Deltaran) is registered for stress and alcohol withdrawal.
- Sleep normalization / fewer awakenings (reported).
- Stress/cortisol modulation.
- Many users report no effect (forum reports, not a trial figure).
Watch: DSIP explained
Video by Dr. Jones, DC on YouTube. Not affiliated with Peptide Carl and not an endorsement — included because a second explanation of the same mechanism is often what makes it click.
Reported protocols
These are the doses the peptide community actually reports running (Reddit & forums), alongside published research — logged for education, not as a recommendation to use.
| Parameter | Commonly reported range |
|---|---|
| Community dose | 100–200 mcg to start (some titrate to 250–300) |
| Frequency | Nightly, or ‘5 nights on / 2 off’; some only on bad nights |
| Route | SubQ (oral/sublingual is hit-or-miss) |
| Cycle | Informal 4-on/2-off or 10-on/20-off blocks |
| Community tip | Pin it 45–60 min before you actually lie down — dose too early and you waste the short window |
Common use cases
| Goal | Community protocol notes |
|---|---|
| Racing-mind / 2 AM waking | 100–200 mcg subQ pre-sleep |
| Deeper sleep | nightly or 5-on/2-off |
| (Reality) | ~a third are non-responders |
Mixing it (reconstitution)
Freeze-dried peptides must be reconstituted with bacteriostatic water before they can be measured. Carl’s calculator turns “mg in the vial + ml of water + target dose” into “units on the syringe” — and tells you how long the vial lasts.
→ Open the Reconstitution Calculator
Injection & handling
SubQ, 100–200 mcg, 45–60 minutes before lying down (not at injection). It degrades fast in solution — store frozen before mixing, refrigerate after, and use within ~2 weeks. Some users report vivid dreams the first few nights.
Stacks it appears in
- Sleep — DSIP + CJC-1295/Ipamorelin — sleep modulation plus the nocturnal GH pulse.
Sources
- Kovalzon VM, Strekalova TV. DSIP: a still unresolved riddle, J Neurochem 2006 (PMID 16539679)
- Graf MV, Kastin AJ. DSIP: a review, Neurosci Biobehav Rev 1984 (PMID 6145137)
- Schneider-Helmert D. DSIP in middle-aged and elderly chronic insomniacs, Eur Neurol 1986 (PMID 3792404)
- Monti JM et al. DSIP in chronic insomniacs, Int J Clin Pharmacol Res 1987 (PMID 3583493)
- Bes F et al. DSIP in chronic insomniac patients, double-blind, Neuropsychobiology 1992 (PMID 1299794)
- Graf MV et al. Degradation of DSIP in plasma and serum, Peptides 1987 (PMID 3628078)
- Okajima T, Hertting G. DSIP inhibited CRF-induced ACTH secretion from rat pituitary in vitro, Horm Metab Res 1986 (PMID 3017833)
- Koplik EV et al. DSIP and Deltaran: antistress protection, Neurosci Behav Physiol 2008 (PMID 18975104)
- Vidal.ru: Deltaran (DSIP) intranasal, Russian label (reg. ЛП-№(016126)-(РГ-RU))
