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science bio ghk cu Amazon.com: GHK-Cu Explained: The Copper Peptide Behind Skin Biology and Regenerative Signaling eBook : Loomis, C.: Kindle Store GHK-Cu — Technical Lot Record
Description
Long-term use or high doses of this peptide, however, have been shown to cause chronic skin inflammation and autoimmune reactions

Therefore, the rapid clinical improvement of erythema within 30 to 50 minutes observed in our patients could be attributed to hydroxocobalamin

In Vivo [1]
The most common side effect is simply pain at the injection site
