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While not one of the more severe GHK-Cu contraindications, its a safety factor to consider, and any use should start at a very low dose with careful monitoring for dizziness or lightheadedness
Store reconstituted solution at 28C and use within 4 weeks.
Copper acts as an essential cofactor for Lysyl Oxidase, the enzyme responsible for cross-linking these fibers and giving skin its firmness and elasticity
Previous studies have reported inconsistent results when comparing oral, sublingual, and intramuscular administration, often limited by small sample sizes or heterogeneous populations (Vidal-Alaball et al., 2006
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