There are no definitive dosing guidelines from regulatory bodies for DSIP in sleep disorders or for promoting deep sleep in healthy populations
As of now, the side effects of dihexa peptide are not fully understood due to limited human trials
10.1146/annurev-physiol-042022-031925 35 XianX.XuM.YuH.WangL.LiX.RakJ.et al (2021)
Preclinical data and practitioner observations suggest effects may occur within days
It can also result in confusion and personality changes
There are still a few more steps that need to happen before that becomes official (the FDA needs to review public comment, propose a rule, and get it accepted by the White House), but its possible that within a years time, getting select peptides will be as simple as going to Hims, your local longevity clinic, or your doctor and asking for a prescription