Honestly wouldn't do that combo. The healing peptide and kpv ought to be fine paired up. Ghk-cu though, opinions vary a lot. Mine is that it really shouldn't be mixed with anything else. That's why I dose it thirty minutes apart from other peptides and steer clear of blends containing it. Saw a video recently where someone had a stack lab-tested, but who really knows what was actually being measured there. Personal take, ghk-cu stays solo.