Since this 2012 publication, there has been very little new research into this question
Independent of its sleep-related activity, DSIP has been studied for stress-axis modulation, including effects on ACTH and cortisol regulation, pain-threshold modulation, and circadian rhythm signaling
Independent testing has found vials with incorrect concentrations, low purity, or bacterial endotoxin contamination , which can cause fever, inflammation, or more serious reactions that are then mistakenly attributed to the peptide itself
Heterosteroids and Drug Research.Prog
After reconstitution, the solution must be stored in a refrigerator at 2-8C