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The fundamental storage principle recognizes that peptides degrade through oxidation, hydrolysis, and bacterial contamination, with copper ions in GHK-Cu creating additional oxidation concerns beyond standard peptides
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Glutathione supplementation does not alter tirzepatide pharmacokinetics, but NAC in high doses (above 1800mg daily) can affect cysteine-dependent metabolic pathways that influence insulin sensitivity, which may interact with tirzepatide's glucose-lowering effects in patients with type 2 diabetes
They just do it at a much higher dose and for a longer period of time
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