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Case report

Effects of DSIP on narcolepsy

Repeated injections of delta sleep-inducing peptide (DSIP) were given to a 35-year-old male narcoleptic. Effects on wakefulness and sleep were evaluated by self-reports, performance tests, multiple sleep latency test and all-night polysomnography. DSIP reduced the frequency of sleep attacks and increased activity, alertness and performance during day-time. The sleep period was compressed by DSIP with enhancement of REM sleep. The results suggest that the effects are due to an…

Study records state what a paper reported. PepIndex does not interpret findings, assess clinical significance, or restate results in language implying an application not present in the source. Last reviewed 23 Jul 2026.