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No, amounts are very small 2mg GHK-Cu contains ~60mcg copper Daily copper intake: 900mcg (food) GHK-Cu copper is minuscule in comparison Copper accumulation: Not a concern with normal dosing Body regulates copper well GHK-Cu doses too low to cause issues Years of use show safety Monitoring: No specific bloodwork needed for GHK-Cu If concerned, can check serum copper/ceruloplasmin Not necessary for most users See our peptide safety and risks , are peptides legal , research vs pharmaceutical peptides , and peptides vs steroids comparison

C.BauerM.BockC.CalandraT.Gat-ViksI.et al (2024)

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Therapeutic peptides provide a concentrated, external dose that triggers a specific biological response

Methods Study design This trial was an investigator-initiated, single-center, open-label, randomized, parallel group study conducted at Daping Hospital, ChongQing, China between August 1 st, 2023, and March 1 st, 2024