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Higher isn't better the goal is the minimum effective dose that resolves symptoms and achieves optimal lab values
Route of administration changes the result: supervised subcutaneous injection of 503A compounded GHK-Cu produces systemic and targeted effects that topical serums cannot replicate
Model: CB6F1 female mice Dose: Injections of 7.5 mg/kg copper-free GHK twice daily
Found in human plasma, saliva, and urine, its levels decline significantly with age, coinciding with reduced tissue repair capacity
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