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Standard oral formulations achieve only 0.7% bioavailability, limiting blood level increases compared to IV delivery
GHK-Cu arrives as lyophilized powder typically with a distinctive blue color from the copper complex requiring reconstitution with bacteriostatic water before injectable use
However, enhanced expression of GGT and MRP1, which are associated with the -glutamyl cycle, has been observed in damaged myocardium [33, 34, 51, 52]
And when GHK-Cu drops, things like collagen production, skin repair, and overall tissue regeneration start slowing down too
Longer international shipping with temperature variability is more concerning
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