Loading peptide directory…
Editorial entries for every peptide we cover — each page links the vendors that carry it, the reviews users have left, and the literature behind it.
Delta sleep-inducing peptide (DSIP) is a nonapeptide first described in the 1970s with the sequence Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu. Reviews still describe it as "a still unresolved riddle": the endogenous precursor is unknown, the receptor system is undefined, and the physiological role is incompletely established despite decades of work.
N-Acetyl Selank is an acetylated Selank analog. PubChem catalogs the molecule, but direct human clinical literature for the modified form is notably sparse. The functional claims around it are largely extrapolated from the parent peptide Selank — a tuftsin-derived heptapeptide studied in Russian anxiety-related literature.
PE-22-28 is a shortened analog derived from the spadin program, developed around inhibition of the TREK-1 potassium channel — a target implicated in depression biology. The retrievable indexed literature is preclinical rather than clinical.
Selank is a synthetic tuftsin analog (Thr-Lys-Pro-Arg-Pro-Gly-Pro) marketed in Russia as a 0.15% intranasal drop. It functions as an anxiolytic neuropeptide without a single universally accepted receptor mechanism. It is not FDA or EMA approved.