What is DSIP (delta sleep-inducing peptide)?
DSIP was isolated in the 1970s from the blood of sleeping rabbits and was thought to promote deep (delta) sleep. To this day neither a corresponding gene nor a receptor has been found; its biological role remains unclear.
How well studied is DSIP (delta sleep-inducing peptide)?
In the 1980s there were small human studies on sleep disorders, narcolepsy and withdrawal with conflicting results; some showed more deep sleep, others no effect. Large, modern controlled trials are missing.
What side effects and risks does DSIP (delta sleep-inducing peptide) have?
Reliable safety data are missing. Individual studies reported unexpected effects such as a raised heart rate. Injecting grey-market peptides carries infection and contamination risks; persistent sleep problems should be investigated by a doctor.
Is DSIP (delta sleep-inducing peptide) approved in Germany?
In short: no. Not approved in the EU/Germany; a DSIP product (Deltaran) is said to have been used in some non-EU countries, but no robust approval data are available. Not named on the WADA list, but prohibited under S0 as a non-approved substance. Grey-market products are untested.
Sources
Note: We deliberately do not list any doses here. For approved medicines, your doctor sets the dose; for unapproved substances there is no reliable information.