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Free ionic copper is toxic and tightly regulated in biological systems, but copper delivered as a peptide chelate bypasses those restrictions, allowing localized delivery to fibroblasts and keratinocytes without systemic copper overload
Another study on diabetes-related ED in rats indicated the potential of NO modulation to successfully improve erectile response [10, 17, 18]
PMC 6543499
Unlike other antioxidants like vitamin C or E, which act more like floating guards, glutathione works inside the cell , where damage often begins
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