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

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

I've been running the GLOW stack for about three weeks now and the GHK-Cu injections are kinda kicking my ass at the site. I get this warm flushing that spreads maybe two inches out from where I pinned, lasts about 20 minutes, then fades. No real lump or hardness after. Anecdotally that seems to line up with what people call a normal histamine-type response to copper peptides, but I keep second-guessing myself on where the line is between "expected flushing" and actual copper sensitivity.

The GLOW stack page lists rare copper sensitivity as a side effect but doesn't really describe what that looks like in practice. Is it just worse flushing, or is it more like hives, swelling, systemic stuff? I've had zero issues with the BPC-157 or TB-500 components, just the GHK-Cu.

For those of you who've run GHK-Cu subq for a while, did the flushing calm down over time or stay the same? Mine hasn't gotten worse but it hasn't gotten better either. Also wondering if dilution volume matters here, I've been using a pretty small amount of bacteriostatic water. Would more dilution spread it out and reduce the local reaction, or is that just wishful thinking?

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