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The Journal of Nutrition, 134(3), 489-492
The copper content of GHK-Cu formulations has been a theoretical safety consideration, given that excessive copper can be toxic - however, the amounts used in cosmetic and research applications are extremely small, the copper is tightly chelated by the peptide (reducing free copper availability), and topical absorption of copper from these products appears minimal and well below levels that would cause systemic copper accumulation or toxicity
Identifying Women at High Risk for Breast Cancer Using Data From the Electronic Health Record Compared With Self-Report
By promoting the repair and growth of liver cells, glutathione ensures the liver can continue performing its vital detoxification functions effectively
2008;198(3):336.e15
Following dosage recommendations helps ensure safety and optimal results
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