DSIP or Delta Sleep-inducing peptide. It is a peptide that improves the delta sleep phase, i.e. the one responsible for the full regeneration of the body. DSIP is a peptide that does not make you drowsy, does not put you to sleep, and regulates the circadian rhythm – therefore it can be taken at any time of the day. The DSIP peptide gives us the most effective regeneration possible despite shorter sleep. DSIP is a peptide that will work well for tired people who want to improve their regeneration or who are overworked, do not have time for more sleep.