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A total of 10 mg in an adult human should be adequate, which is about 2000 times lower than the LD50 calculated for humans
This can make it harder for them to absorb and use vitamin B12
2010 Sep;28(9):1155-61
Its common to have slight pain, tenderness, swelling, or redness at the injection site
no proven morning-versus-night advantage Injectable use No FDA-approved product label or validated self-injection schedule Sources: Topical GHK-Cu phase 2 study Direct answer: There is no clinically proven universal best time for GHK-Cu
Research consistency benefits from established injection protocols
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