Normally, GHK-Cu's collagen-stimulating effects outweigh this degradation
Sleep quality Studies since at least the 1990s have shown that higher GHRH activity can decrease wakefulness and increase slow-wave sleep.20 21 The relationship has to do with GHRH being necessary to slide you into the deepest sleep stages and keep you there.22 So the science supports using something like CJC-1295 to get more shut-eye
However, for a peptide like BPC-157 that works on regeneration over time, a steady, sustained release (as often seen with subcutaneous injections) may be more advantageous
Often, yes, by sticker price
DSIP modulates the non-REM phase of sleep, contributing to deep brain and body regeneration
Limited human clinical trial data Most evidence is preclinical and observational