is ghk cu bad PSA] Albeit rare Copper peptide "uglies" are real and scary. Case report and looking for advices : r/SkincareAddiction GHK-Cu and Reproductive Health: Mechanisms,

as well as endogenous sources include non-enzymatic reactions through the mitochondrial electron transport chain during oxidative metabolism to generate ATP [19]

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It's a relatively high amount for a supplement to have, but it shouldn't be a problem for most people since the maximum per-day allowance for adults is 400mcg.34 That said, you may want to avoid Doctor's Best Glutathione + Milk Thistle if you take another supplement that includes selenium or eat a lot of selenium-rich foods (e.g., Brazil nuts, tuna)

A COA indicating 99% purity by HPLC means that 99% or more of the peptide content is the correct GHK-Cu sequence, with minimal contaminants

We'll review your goals and history and tell you honestly whether GHK-Cu is an appropriate option for you

JAMA Otolaryngology Head & Neck Surgery, 131 (11), 970-975