Long post, sorry. GHK-Cu: what actually has human evidence behind it, and what is extrapolation from animals?
There is a serious question about whether the studied form matches what is sold, and nobody in a thread can answer it.
I have started logging dose, time, and sleep because otherwise the anecdote is just a mood.
Injection site reactions are trivial until they are not, and a fresh needling technique removes half of them.
Where does the human data stop and the extrapolation start?
An inconclusive account is useful if it stops the next person mistaking a story for a controlled comparison.
Name the active ingredient, not just the brand. It makes these threads searchable years later.
Nobody has ever been talked out of a stack by a stranger on the internet.
Baseline first.
Same here.
Baseline first. Not on GHK-Cu but the pattern is familiar.
Read methods.
Same here.