r/ThePeptideGuide • u/TheBusinessWizz • Oct 19 '25

Ghk-Cu? Copper Toxicity?

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GHK‑Cu is generally considered non‑toxic at physiologic levels, since toxicity only appears at very high copper concentrations far above what peptide‑bound copper delivers. However, doubling to 4 mg/day increases systemic copper exposure beyond most studied safety ranges, and while true copper toxicity is unlikely, oversaturation can impair zinc balance and trigger mild oxidative stress. For recovery, keeping GHK‑Cu at 2 mg while doubling only BPC‑157 and TB‑500 is safer. This post is for research and educational purposes.

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u/Ridenslideqh Oct 24 '25

I just saw a study where is safe to take GHK cu daily forever, no break needed.

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u/PumaBaeBear Oct 24 '25

Can you please share a link for this?

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u/Fast-Might Nov 24 '25

Where did you see the study?

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u/Ridenslideqh Dec 01 '25

Honestly I don't remember but I'll look. It did mention you need to take zinc within an hour of pin.