is 2mg of ghk cu too much GHK-CU Peptide Injection Dosage: Complete Protocol Guide for Optimal Results GHK-Cu Dosage: A Doctor's Guide
Description
No systemic copper toxicity at standard doses (Pickart & Margolina, 2018)

Without being bound to copper, GHK has been shown to be a quencher of cytotoxic end products of lipid peroxidation such as ,4-hydroxy-trans-2-nonenal and acrolein, which can be associated with severe pathologies such as diabetes and neurodegenerative disease [1819]
Storage: Store at controlled room temperature (20C to 25C)

Discrepancies in study relevance were resolved by consensus