ghk- cu 50mg GHK-Cu Research Copper Peptide GHK-Cu 50mg — UK Research
Description
[110] Animals can convert cyanocobalamin and hydroxocobalamin to the bioactive forms adenosylcobalamin and methylcobalamin by enzymatically replacing the cyano or hydroxyl groups

The impact of vegan diet on B-12 status in healthy omnivores: five-year prospective study

It is a part of the insulin super-family

We do not recommend B12 injections while pregnant or breastfeeding
