Valyra said:
Okay, I just injected my first dose of GHK-Cu - about 1.6mg. I have to say I was a little scared, cause people say it stings and burns. This far, I feel a little tingle. Injecting didn’t hurt at all. However, I immediately felt light headed and got a really bad ringing in my ears. Has anyone else experienced that? It may be anxiety, but it scared me a little. Didn’t feel that way after injecting reta.
I found this on line I hope it helps..
The light-headedness + ringing in the ears (tinnitus-like) right after injection? Yeah, that's not super rare with GHK-Cu, though it's usually mild/transient. Here's what usually causes it based on user reports:
Vasodilation / blood pressure drop: GHK-Cu can cause a quick, mild systemic vasodilatory effect (copper influences nitric oxide pathways and vascular tone). That sudden "whoosh" feeling + ringing can happen when blood pressure dips briefly or blood flow shifts to the head/ears.
Histamine release or mild inflammatory response: Some people get a short-lived histamine-like reaction from the peptide—leads to flushing, light-headedness, and ear ringing (similar to a niacin flush but subtler).
Anxiety/adrenaline spike : Totally valid possibility too—first-time peptide injections can trigger a fight-or-flight response, especially if you're anticipating pain or sides. That adrenaline rush can cause light-headedness, tinnitus, heart racing, etc.
Injection speed/technique : If you pushed it in fast, the peptide hits systemic circulation quicker → more pronounced transient effects.
Most people say it passes in 5–15 minutes (sometimes less), and it often gets better or disappears completely on subsequent doses as your body adapts. If it was really intense or lasted longer, consider these tweaks for next time:
Inject slower (over 20–30 seconds).
Use a finer needle (30G 8mm if you're not already) and let alcohol dry fully.
Reconstitute with slightly more bac water if possible (dilution can reduce local/systemic irritation).
Take it sitting down or lying down first few times to blunt any BP drop.
If ringing persists or worsens, stop and check blood pressure—rare but worth ruling out.