DSIP Nasal Spray Sleep Support Without Grogginess Lavi MD Alpha Peps Frontiers Pichia pastoris secreted peptides crossing the blood brain barrier and DSIP fusion peptide efficacy in PCPA induced insomnia mouse models Sleep Management Atlanta GA Sleep Therapy Alpharetta GA DSIP (Delta SleepInducing Peptide) is a naturally occurring neuropeptide first isolated in 1974. It's best known for its potential role in regulating sleep, stress, and neuroendocrine function. Here's a clear breakdown of