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doi:10.1073/pnas.0308082100

Important Research Considerations Many published research protocols investigate GHK-Cu within the 12mg daily range , while higher doses have also been explored experimentally

Common Research Questions Q: How does GHK-Cu compare to retinoids for photoaging

Con: IV has the worst side effects and can include allergic reactions in extreme cases

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However, even younger individuals can be deficient in the vitamin and standard blood tests do not always accurately indicate when levels are low