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Six clinical trials involving over 900 participants established this window through systematic dose-finding studies

If no dietary or lifestyle changes are made, energy levels may dip slightly, especially in B12-deficient individuals

GHK-Cu, or glycyl-L-histidyl-L-lysine copper complex, is a naturally occurring copper peptide studied for collagen-related pathways, tissue remodeling, antioxidant defense, and skin repair [7] [8]

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