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Product Specifications Compound: Glycine-Histidine-Lysine Copper Complex (GHK-Cu) Amount: 50mg per vial Purity: 99% (HPLC-verified) Form: Lyophilized powder Storage: Keep refrigerated at 28C Shipping: 25 business days Use: Research and laboratory use only Frequently Asked Questions What is GHK-Cu 50mg used for in research

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Although L-tyrosine is a non-essential amino acid that can be synthesized endogenously from phenylalanine via the enzyme phenylalanine hydroxylase, its synthesis may become insufficient under conditions of physiological stress, rapid growth, or limited phenylalanine availability [71]

This decrease was observed in both younger and older subjects, demonstrating the effectiveness of the astaxanthin/zeaxanthin combination for all age groups