zinc ghk cu Do you need when using GHK-Cu? The answer is more nuanced than a blanket rule. In my new Spa and Tell video, I compare the popular explanations with what the evidence actually supports. Watch: Stem Cells for Autoimmune

Stem Cells for Autoimmune Diseases - Regenestem

This limits its effective duration of action and creates challenges for consistent dosing

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Biologically, a biphasic curve like this often points to more than one mechanism operating at once, for example a growth-promoting signalling pathway that dominates at low concentrations, and a separate, damaging or growth-arresting effect, perhaps related to oxidative stress from excess free copper, that only becomes significant once concentration climbs high enough