The finding that a GHRH analogue and a growth-hormone-releasing peptide combine to produce a supra-additive GH pulse goes back to work from around 1990 onward, and it is robust 4 but it is a finding about the two classes , demonstrated with various specific peptides, not a study of this exact pair
Some clinical studies found that consistent use of GHK-Cu can lead to a 20-30% increase in skin firmness in just 12 weeks
Three further articles reported a beneficial effect of liraglutide on depression-like 165 as well as anxiety-like behavior 164,167 in rats and mice, possibly mediated by neuroprotective mechanisms in the hippocampus 164,167 , and improved cognitive function 165
Combined use may enhance results
The statements in this article have not been evaluated by any regulatory authority to diagnose, treat, cure, or prevent any disease