Description
DSIP (Delta Sleep-Inducing Peptide) is a small, naturally occurring neuropeptide composed of nine amino acids (a nonapeptide with the sequence Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu). It was first isolated in the 1970s from the brain venous blood of sleeping rabbits.
Key Characteristics
- Sleep Regulation: It gets its name from early studies showing it promotes slow-wave (delta-wave) sleep—the deepest, most physically restorative stage of non-REM sleep.
- Mechanism: It easily crosses the blood-brain barrier. Research suggests it interacts with the central nervous system, modulating neurotransmitters (like GABA and serotonin) and helping regulate the hypothalamic-pituitary-adrenal (HPA) axis to lower stress hormone (cortisol) output.
- Regulation & Status: DSIP is not approved by the U.S. Food and Drug Administration (FDA) as a drug or medical treatment. It is sold online or through specialty channels primarily as a research chemical.
Potential Areas of Research
- Sleep Disorders: Studied for chronic or treatment-resistant insomnia, though large-scale human clinical data remains limited and mixed.
- Stress & Recovery: Investigated for stress resilience, cortisol balance, and minor analgesic (pain-modulating) properties in animal and small human studies.
- Hormone Modulation: Looked at for potential downstream effects on growth hormone (GH) and luteinizing hormone (LH) secretion.
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