ghk-cu before and after stomach Peptides After: Dosage, Benefits & How It Works for Skin and Hair Copper Peptides Before and After:
Description
2003 Dec 2;3:17

However, such drugs are not causes of B12 deficiency

PMID 24009833
[DOI] [PubMed] [Google Scholar] 122.Klonoff DC, Buse JB, Nielsen LL, et al