DSIP for Deep Sleep: Benefits, Dosage & Safety What is DSIP and Why You Need to Know About It Ever heard of DSIP (Delta Sleep Inducing Peptide)? This little known natural neuropeptide plays a huge role in deep, restorative sleep About 50% of people will say it's a miracle while the other 50% will say it's useless. Read these papers yourself and find out where you stand. Delta Sleep Inducing Peptide Recovers Motor Function in SD Rats after Focal Stroke