Chronic insomnia trial, 1987
A randomised trial in 14 patients with severe chronic insomnia reported improved night sleep efficiency and daytime alertness over seven nights of dosing. Reported in the cited paper.
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DSIP (Delta Sleep-Inducing Peptide) is a naturally occurring nonapeptide first isolated from rabbit brain, studied since the 1970s for its role in slow-wave sleep regulation. Human clinical trials, primarily from the 1980s, examined DSIP's effects on sleep quality and duration in chronic insomniacs, with mixed results across studies. More recent preclinical research has examined its neuroprotective properties in stroke recovery models.
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Overview
DSIP (Delta Sleep-Inducing Peptide) is a naturally occurring nonapeptide first isolated from rabbit brain, studied since the 1970s for its role in slow-wave sleep regulation. Human clinical trials, primarily from the 1980s, examined DSIP's effects on sleep quality and duration in chronic insomniacs, with mixed results across studies. More recent preclinical research has examined its neuroprotective properties in stroke recovery models.
What the research reports
Outcomes described across the published DSIP literature and ongoing study. Read each as research context rather than a promised personal result.
Sleep architecture research
Studied for effects on delta wave sleep and sleep structure, which is the origin of the peptide's name and its research interest. Reported in research settings.
Short half-life exposure note
The 15 minute half-life means exposure is brief, which also explains why effects are reported as inconsistent across studies. Reported in research settings.
Insomnia clinical study work
Several 1980s and 1990s trials tested it in chronic insomnia, with one reporting improved sleep efficiency and daytime alertness. Reported in research settings.
Stress response study record
Proposed as a modulator of stress hormones, although a controlled trial found no effect on ACTH or cortisol secretion. Described in the research record.
Historical research value
The peptide has a long study record from the 1970s onward, useful context even though the field largely moved on. Noted across the published research record.
Clinical evidence
The published DSIP record, labeled by strength so you can see what is settled and what is still emerging.
A randomised trial in 14 patients with severe chronic insomnia reported improved night sleep efficiency and daytime alertness over seven nights of dosing. Reported in the cited paper.
SourceA 1992 randomised trial in 16 chronic insomnia patients found only weak effects on sleep efficiency and latency, judged unlikely to offer real therapeutic benefit.
SourceA randomised study in 15 participants reported that the peptide did not affect ACTH or cortisol secretion in response to CRH or to meals. Reported in the cited paper.
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