Content reviewed by clinical research staff

Last reviewed: March 2026Sources: PubMed, FDA, WADA Prohibited List

Evidence graded using the PeptideScholar A-D system.

DSIP (Delta Sleep-Inducing Peptide)

Neuropeptide9 amino acids

DLimited Data
60
Moderate Credibility
2 cited studies | Evidence level D

DSIP is a neuropeptide originally isolated from rabbit brain during induced sleep. Research suggests it may modulate sleep patterns, stress responses, and neuroendocrine function.

Mechanism of Action

Acts on multiple neurotransmitter systems including serotonergic, glutamatergic, and GABAergic pathways. May modulate cortisol and ACTH release.

Benefits

  • Promoted slow-wave sleep onset in early human studies[1]
  • Reduced cortisol levels in some reports[2]
  • May normalize disrupted sleep patterns[1]
  • Opioid withdrawal support explored in small studies[1]
Not medical advice - research-reported information only

This content is for informational purposes only and does not constitute medical advice.

DSIP (Delta Sleep-Inducing Peptide) - Dosing in Published Research

Reported routes: Intravenous, Subcutaneous injection, Intranasal
Early clinical studies used 25-30 nmol/kg IV before sleep. No standardized dosing protocol exists.

The dosing information above is sourced from published research literature and clinical trials. These are not recommendations. Individual responses vary. Always consult a healthcare provider before considering any peptide-based therapy.

Side Effects

  • Very limited safety data[1]
  • Potential morning grogginess[1]
  • Unknown long-term effects
  • Quality control concerns with research products[1]

Considering peptide research?

DSIP (Delta Sleep-Inducing Peptide) is not FDA-approved. Always consult a licensed healthcare provider before considering any peptide.

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Research & Evidence

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References

  1. 1.Delta-sleep-inducing peptide (DSIP): a review.. Neurosci Biobehav Rev, 1984. "DSIP promoted sleep onset and enhanced EEG slow-wave activity in human and animal studies" [PMID: 6145137]
  2. 2.Therapeutic effects of delta-sleep-inducing peptide (DSIP) in patients with chronic, pronounced pain episodes. A clinical pilot study.. Eur Neurol, 1984. "DSIP normalized stress-elevated corticotropin levels and reduced adrenal hypertrophy in rats" [PMID: 6548970]

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