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Typical research doses of 250-500 mcg translate to 10-20 units, right in the practical sweet spot
Research suggests starting with lower concentrations and increasing gradually, monitoring for any signs of irritation
Just taking large amounts of B12 supplements does not mean that your body will be able to use all of it
Results develop gradually over several sessions
Haas, R
FDA and Regulatory Status of GHK-Cu Peptide GHK-Cu regulatory status depends on whether it is discussed as a cosmetic ingredient, a compounded bulk drug substance, an injectable preparation, or an investigational product
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