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That's why every peptide, including GHK-Cu, undergoes rigorous small-batch synthesis and exacting amino-acid sequencing
This could theoretically lead to a deficiency syndrome where the body neutralizes its own sleep/stress regulatory factors, potentially causing autoimmunity or hypersensitivity reactions
No evidence of severe cardiovascular, hepatic, or endocrine adverse effects has been observed within standard research dosing ranges in available data
Iepsen EW, Zhang J, Thomsen HS, et al
E.GijonM.KennedyP
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