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GSH also exerts negative feedback inhibition on GCL, meaning the cell self-regulates its own production
Context matters, and the context is often missed
Gastrointestinal effects The most common side effects are gastrointestinal, driven primarily by the GLP-1 mediated slowing of gastric emptying
GHK-Cu also boosts glycosaminoglycans (like hyaluronic acid) and proteoglycans, improving moisture retention and plumpness
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