4mg ghk cu daily Neurogan Health Copper Peptide GHK-CU , 120 mcg, 60 Tablets, 0.52 oz (15 g) GHK-Cu Peptide: Benefits for Tissue

Messenger 117 , 1216 (2004)

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Common contraindications cited in the research-use community include: anyone with active or recent cancer (BPC-157 and TB-500 promote angiogenesis), people with Wilson's disease or other copper-metabolism disorders (GHK-Cu component), anyone pregnant or breastfeeding (no safety data), and athletes subject to WADA testing (BPC-157 and TB-500 are prohibited)

Chee Kay, Cheung Suceena, Alexander Heather N., Reich Haresh, Selvaskandan Hong, Zhang Jonathan, Barratt (2025) The pathogenesis of IgA nephropathy and implications for treatment Nature Reviews Nephrology 21(1):9-23