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DSIP for Sleep: What the Evidence Shows

What human and animal studies show about DSIP for sleep, how strong that evidence is, and what is still unproven.

Medically reviewed by Juan Pablo Frías, MD · · DisclosureSleep peptideUpdated
Strongest evidence
Human RCT
Human studies
76
PubMed records, our ledger
Animal studies
306
PubMed records, our ledger
Studies we summarised
9
with an outcome for sleep

Evidence for sleep

Each row is an outcome related to sleep from a published study, strongest design first. Animal and cell results are labelled and are not human results. User reports are not counted as evidence here.

DSIP for sleep: outcomes in published studies
OutcomeResultStudy typeSource
Anaesthetic depth (BIS)DSIP lightened anaesthetic depth (higher BIS, less delta rhythm) and raised heart rate; the opposite of the hypnotic effect predicted.Human RCTn = 24European journal of anaesthesiology 2009, PMID 19142086
Sleep efficiency and latencyPolysomnography showed higher sleep efficiency and shorter sleep latency with DSIP than placebo.Human RCTn = 16Neuropsychobiology 1992, PMID 1299794
Overall therapeutic benefitThe authors concluded short-term DSIP is unlikely to be of major therapeutic benefit in chronic insomnia; subjective sleep quality did not change.Human RCTn = 16Neuropsychobiology 1992, PMID 1299794
Sleep time and clinical significanceSleep improved slightly under DSIP but the authors judged it of little clinical significance.Human controlled trialInternational journal of clinical pharmacology research 1987, PMID 3583493
Night sleepDSIP substantially improved night sleep with the first and with repeated doses.Human controlled trialn = 14European neurology 1987, PMID 3622582
Daytime alertnessDaytime alertness and performance increased significantly.Human controlled trialn = 14European neurology 1987, PMID 3622582
Sleep normalisation in insomniacsFour consecutive injections normalised disturbed sleep in insomniacs in this early series.Human controlled trialNeuropsychobiology 1983, PMID 6689058
Latency and durationSleep induction took about 1 hour to start and effects lasted up to 20 hours.Human controlled trialNeuropsychobiology 1983, PMID 6689058
Total sleep timeMedian total sleep time rose by 59% in the 130 minutes after a morning DSIP infusion versus placebo.Human controlled trialn = 6International journal of clinical pharmacology, therapy, and toxicology 1981, PMID 6895513
Plasma DSIP-like immunoreactivityEndogenous DSIP-like immunoreactivity did not differ significantly between groups.Human observationaln = 30Peptides 1995, PMID 8532601
Sleep duration and qualityLonger, less interrupted sleep with no day-time sedation or other side effects in 6 insomniacs after a single dose.Human uncontrolled trialn = 6Experientia 1981, PMID 7028502
Sleep promotion by DSIP fusion peptideA DSIP fusion peptide restored neurotransmitter imbalance better than DSIP alone and may enhance sleep in insomniac mice.Animal · mouse (not a human result)Frontiers in pharmacology 2024, PMID 39444618

PubMed records for DSIP and sleep: 76 human, 306 animal (search counts, not studies we reviewed). Grades follow our evidence scale.

How strong is it?

Strongest evidence:Human RCT evidence, 4 of 4European journal of anaesthesiology 2009, PMID 19142086

A human randomized trial outweighs any number of animal studies. Animal and cell results show a mechanism worth testing, not that it works in people.

Other peptides people research for sleep

TirzepatideSermorelinTesamorelinCJC-1295HGHSelank
All peptides for sleep, compared

Common questions

Does DSIP help with sleep?

The strongest study we summarise for sleep is human rct evidence, across 9 studies with an outcome for sleep. A trial result is not an approval; see the legal status.

Is DSIP approved for sleep?

No. DSIP is not FDA approved for any use, including sleep.

What is the best peptide for sleep?

There is no single answer. Our sleep overview compares each candidate by evidence grade and legal status rather than by popularity.

More on DSIP

DosageDoses used in published studies, with the source for each.CalculatorVial, water and dose to syringe units.Side effectsWhat labels and studies report, and what is unknown.ResultsStudy outcomes and when they were measured.PricePrice per mg and per week from dated listings. No vendor links.

Sources

  1. 1Delta sleep-inducing peptide alters bispectral index, the electroencephalogram and heart rate variability when used as an adjunct to isoflurane anaesthesia.European journal of anaesthesiology · 2009PMID 19142086Accessed 2 Oct 2026
  2. 2Effects of delta sleep-inducing peptide on sleep of chronic insomniac patients. A double-blind study.Neuropsychobiology · 1992PMID 1299794Accessed 2 Oct 2026
  3. 3Study of delta sleep-inducing peptide efficacy in improving sleep on short-term administration to chronic insomniacs.International journal of clinical pharmacology research · 1987PMID 3583493Accessed 2 Oct 2026
  4. 4Effects of delta-sleep-inducing peptide on 24-hour sleep-wake behaviour in severe chronic insomnia.European neurology · 1987PMID 3622582Accessed 2 Oct 2026
  5. 5Effects of DSIP in man. Multifunctional psychophysiological properties besides induction of natural sleep.Neuropsychobiology · 1983PMID 6689058Accessed 2 Oct 2026
  6. 6Acute and delayed effects of DSIP (delta sleep-inducing peptide) on human sleep behavior.International journal of clinical pharmacology, therapy, and toxicology · 1981PMID 6895513Accessed 2 Oct 2026
  7. 7Delta sleep-inducing peptide in normal humans and in patients with sleep apnea and narcolepsy.Peptides · 1995PMID 8532601Accessed 2 Oct 2026
  8. 8The influence of synthetic DSIP (delta-sleep-inducing-peptide) on disturbed human sleep.Experientia · 1981PMID 7028502Accessed 2 Oct 2026
  9. 9Pichia pastoris secreted peptides crossing the blood-brain barrier and DSIP fusion peptide efficacy in PCPA-induced insomnia mouse models.Frontiers in pharmacology · 2024PMID 39444618Accessed 2 Oct 2026

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