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DSIP
research guide
DSIP is a nonapeptide first isolated from rabbit brain, historically studied for effects on slow-wave sleep. Older human studies from the 1980s tested intravenous DSIP in small groups, including chronic insomniacs, reporting effects on sleep duration and quality. Mechanistic work in animals also links DSIP to sleep-associated growth hormone release. These studies are decades old, used small samples and intravenous administration, and do not reflect any modern, larger, or non-invasive route trial in the sources reviewed.
Evidence depends on population and formulation. Literature summary, not clinical peer review.
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Jorge Abreu is not a doctor. This is an educational research summary, not a prescription or a personal dosing plan. Study results do not establish that a supplier product is safe or effective for people. Consult a licensed clinician about medical decisions.
01 · Start with identity
What is DSIP?
DSIP is a synthetic version of a naturally described nonapeptide; the studies reviewed used synthetic DSIP administered intravenously in a clinical research setting, not the nasal spray or other consumer routes sold today, so route-specific effects are not established as equivalent.
Also searched as: Delta Sleep Inducing Peptide
02 · Read the evidence
What the studies reported
01
Intravenous DSIP tested in chronic insomniacs
A 1981 study gave synthetic DSIP (25 nmol/kg body weight) intravenously to six middle-aged chronic insomniacs, reporting longer sleep duration, higher sleep quality with fewer interruptions, and slightly more REM sleep, with sleep-promoting effects appearing in the second hour after injection. [1]
02
Multiple small human studies described broader psychophysiological effects
A 1983 summary of five separate human studies using single and repeated intravenous DSIP injections under double-blind conditions reported good compatibility, a sleep induction latency around one hour, and effects lasting up to 20 hours, alongside other psychophysiological findings beyond sleep alone. [2]
03
Animal work links DSIP to growth hormone release during recovery sleep
A rat study found that four hours of sleep deprivation led to a significant increase in plasma growth hormone and in slow-wave sleep above initial values after the animals were removed from the deprivation apparatus and allowed to sleep, and that this growth-hormone and slow-wave-sleep increase was blocked by an antibody against DSIP, supporting a proposed role for DSIP in sleep-related growth hormone release during recovery from deprivation rather than during the deprivation period itself. [3]
03 · Numbers in context
What does dosing evidence actually support?
The identified human studies used intravenous synthetic DSIP, with one study specifying 25 nmol/kg body weight in a small group of six chronic insomniacs, and another summarizing five separate intravenous injection studies without a single unified dosing protocol reported in the abstract reviewed. These describe historical clinical research administration, not a validated protocol for any other route (such as nasal spray) or for unsupervised use, and sample sizes were small.
A study dose is not a personal dose. Population, route, formulation and supervision are part of the result. Online community schedules are not treated here as established clinical protocols.
04 · Safety and limits
What not to overlook
- Identified human studies are from the early 1980s, used small sample sizes, and administered DSIP intravenously in a supervised clinical research setting.
- No evidence in the sources reviewed evaluates nasal spray or other non-intravenous DSIP routes in humans.
- The growth hormone release mechanism linking DSIP to sleep was demonstrated in rats, not confirmed in the human studies located.
- Findings this old have not been located here in a modern replication, so their applicability to current commercial products is unverified.
05 · Product distinctions
Names are not interchangeable
Sold as a lyophilized synthetic peptide powder in single-compound vials and in combination nasal spray products with Epithalon or Selank. The historical clinical studies used intravenous administration under supervision, a different route and setting from any consumer nasal spray or self-prepared vial, and no route equivalence has been established here.
06 · Handling and storage
Follow validated product instructions
A single water volume, refrigerator temperature or expiry window cannot be assumed for every compound and formulation. Use the exact manufacturer documentation and a validated laboratory procedure. If stability, solvent compatibility or microbiological quality is not documented, those properties remain unverified.
Refrigeration, clear appearance and bacteriostatic water do not make an unverified research product suitable for injection. This guide does not provide a mixing or administration procedure.
The existing concentration calculator checks arithmetic only. It cannot choose a safe dose or establish compatibility, sterility or shelf life.
Reign Peptide · Business disclosure
Research product listings
Jorge Abreu is involved in Reign Peptide. Links to Reign are a business connection, not an independent endorsement. Reign lists these products for laboratory research, not human consumption.
Use the listing to check the labeled identity, amount and available batch documentation. A purity result alone does not verify sterility, clinical suitability or equivalence to a medicine used in a trial.
Names and sizes are product labels, not dosing recommendations. Confirm current details with the seller.
Supplies and accessories
Compare the actual specifications
Jorge's supply directory includes syringes, alcohol pads, storage cases, travel refrigeration and electrolytes, with separate links for the two travel refrigeration options. Accessory availability is not a recommendation to administer a research compound.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases.
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Peptide fridge case
Listing: 63 slots for 3mL bottles, bag only. An organizer is not active refrigeration or a validated storage system.
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Peptide travel case
Medineed travel case with temperature display and two ice packs per listing. Check dimensions and transport requirements.
View on Amazon ↗Questions still worth asking
What remains unresolved?
- Would a modern trial using a non-intravenous route reproduce the sleep effects reported in the 1980s intravenous studies?
- Does the growth-hormone-release mechanism identified in rats have a confirmed counterpart in human physiology?
Check the source
References and evidence scope
- Human trial · 1981The influence of synthetic DSIP (delta-sleep-inducing-peptide) on disturbed human sleep ↗
- Human trial · 1983Effects of DSIP in man. Multifunctional psychophysiological properties besides induction of natural sleep ↗
- Animal study · 1988Evidence for a role of delta sleep-inducing peptide in slow-wave sleep and sleep-related growth hormone release in the rat ↗
These are the sources reviewed for this page, not an exhaustive systematic review. Related compound research is identified as such. Product links are not scientific references.
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