Peptide
DSIP (Delta Sleep-Inducing Peptide)
SaveA naturally occurring nonapeptide originally isolated from rabbit brain, studied for effects on sleep architecture, stress, and pain modulation.
Quick verdict
Despite its name, evidence for reliable sleep induction in humans is inconsistent. Small studies show mixed results for insomnia and chronic pain.
Evidence score
A rough internal score reflecting quantity, quality, and consistency of human evidence. Not a clinical recommendation.
What the research shows
Early European studies showed some effects on sleep EEG patterns. Results have been inconsistent across trials. Interest has waned in mainstream research.
Benefits
- Some EEG data suggesting modulation of sleep architecture
- Possible stress-response modulation in small studies
- Opioid-withdrawal symptom reduction in limited data
Dosage notes
Historical protocols: 100–300 mcg IV or intranasal. No standardized dosing exists.
Side effects
- Headache
- Transient hypotension
- Injection-site reactions
Who should be cautious
Not approved in any major market. Gray-market products may have quality issues. Blood-brain barrier penetration is uncertain.
What this page cannot tell you
The peptide's name oversells the evidence. Sleep-inducing effects are not consistently replicated.
Leaderboard scores
- Sleep30
- Stress20
- Pain20
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