GHK-Cu injection site reactions, how do you tell normal flush from copper sensitivity

Posted by student748 in Safety & Side Effects - 1 points, 0 comments.

Started a glow stack about three weeks ago, mostly for skin and some nagging tendon stuff from training. The GHK-Cu component is giving me a proper warm flush at the injection site, red and slightly raised for maybe 20-30 min after. For what it is worth it doesnt hurt much, just warm and a bit itchy. But ive seen "rare: copper sensitivity" listed as a side effect and im not sure where the line is between a normal copper peptide reaction and something i should actually be worried about.

Has anyone here had a copper sensitivity reaction and what did it look like compared to the normal flush? Did it get worse with repeated doses or show up systemically rather than just at the site?

Also keen to know if anyone has tracked serum copper or ceruloplasmin while running GHK-Cu long term. Im a bit cautious about copper accumulation since it doesnt clear that fast and the doses in these stacks are daily or near-daily. Sweet as if anyone has bloodwork to share, just trying to figure out if what im seeing is bog standard or worth pulling back on.

Community discussion - research and educational context only. Not medical advice.