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Natural supplements are not regulated as strictly as medications, so quality and potency can vary between products
DOI: 10.1186/s12950-019-0218-y [Google Scholar] Chen J, Xie JJ, Shi KS, Gu YT, Wu CC, Xuan J, et al
A comprehensive review published in Biomolecules confirmed that GHK-Cu influences the expression of more than 4,000 human genes, many of them involved in tissue remodeling, antioxidant defense, and anti-inflammatory pathways
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