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Active at nanomolar concentrations: Unlike many peptides that require high systemic concentrations, GHK-Cu has been shown to exert meaningful biological effects at nanomolar (10 M) concentrations making it effective even at low doses
Best Pract Res Clin Endocrinol Metab 16:639651
It should also be noted that beyond supplementation and naturally produced carnitine, individuals can obtain L-carnitine from animal products such as fish, red meat, lamb, etc
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In biochemical and cellular research, GHK-Cu is widely studied for its role in peptidemetal interactions, extracellular matrix signaling, copper-dependent molecular regulation, and cellular communication pathways
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