ghk-cu used in cosmetics since 1970s 7% Accelerant Cu was formulated to help provide a reduced appearance of wrinkles and fine lines 99% GHK-Cu Copper Peptide Powder
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10.1038/ajg.2013.451 [DOI] [PubMed] [Google Scholar] Atreya R., Mudter J., Finotto S., Mllberg J., Jostock T., Wirtz S., et al

B12 in the form of hydroxocobalamin can detoxify the body of cyanide

In some cases, cancer treatments, such as chemotherapy or surgery, can impair the bodys ability to absorb certain nutrients, including B12

I believe its the injection that caused it as I never experienced anything like