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Washout periods: for crossover designs, a 7-14 day washout should be adequate given both short serum half-life and the typical decay timeline of tissue-level effects post-dosing
Pribasnig, M
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Note that reconstituted injectable GHK-Cu can be used topically, but topical copper peptide products formulated for skin application may include additional ingredients optimizing penetration and stability that simple water reconstitution doesn't provide
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