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(source) The theory is built on opposing side effects
Waiting to see if there are good results
References: Do Glutathione Supplements Have Proven Benefits
This work suggested that GHK-Cu acts as a broad-spectrum restorative signal rather than a single-pathway agonist a finding that has informed subsequent research directions
Topical GHK-Cu dosage is consequently expressed as a percentage concentration rather than an absolute mass
The lack of solid clinical evidence on long-term safety, especially for ongoing use, creates uncertainty about potential interactions
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