ghk-cu benefits effects what does it do A Dermatologist's Take on the Copper Peptide (GHK-Cu) Trend GHK-Cu: Skin Benefits GHK-Cu is
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They're legal requirements that define how these compounds can be sold and used
Notice those concentrations: 1.34 mg/mL and 2.68 mg/mL

Hypoxia-cultured human adipose-derived mesenchymal stem cells are non-oncogenic and have enhanced viability, motility, and tropism to brain cancer

(Green R, et al., Nature Reviews Disease Primers, 2017 PubMed: 28660890 ) Because B12 is water-soluble, excess amounts that the body cannot use are excreted in urine rather than stored
