Peptide Database

Delta Sleep Inducing Peptide · Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu

DSIP (Delta Sleep Inducing Peptide) is a nonapeptide first isolated from rabbit cerebral venous blood during electrically induced sleep. Research shows it promotes slow-wave sleep, reduces pain sensitivity, normalizes circadian rhythms, lowers cortisol, and exhibits stress-protective effects. It also stimulates LH release and may influence GH pulsatility. Multiple mechanisms of action are proposed; its receptor has not been fully characterized.

Dipeptide Diaminobutyroyl Benzylamide Diacetate

Syn-Ake is a synthetic dipeptide that mimics the mechanism of waglerin-1, a peptide found in Temple Viper venom, by antagonizing muscular nicotinic acetylcholine receptors and reducing muscle contraction. Applied topically, it reduces the depth of expression lines by temporarily relaxing facial muscles. It has become a common high-end cosmetic ingredient positioned as a non-injectable alternative to botulinum toxin.