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In one study, Delta sleep inducing peptide increased the percentage of slow-wave sleep by 32% and an increase sleep time by 72% in rats (Gottesmann et al., 1982)
Journal of Cosmetic Dermatology, 22 (1), 262-266
The stated purity (99.9%) refers to the peptide content as assessed by common analytical methods used in peptide manufacturing, such as chromatography
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There is one Phase I trial registered as NCT02637284 in 2015, intended to enrol forty-two participants, which was subsequently cancelled with no published results [7]
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