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They are more advantageous than oral doses as they are more easily absorbed by the body and can help protect the nerves
Zhang G, Wei H, Zhao A, Yan X, Zhang X, Gan J, Guo M, Wang J, et al
WADA does not currently list GHK-Cu as a prohibited substance, although athletes are typically advised to confirm current prohibited-substance lists for their sport
Others warn about unexpected metallic tastes and emphasize the importance of blood tests to confirm a true deficiency before starting treatment
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