Steve Kates, a longtime pharmaceutical executive and expert in peptide design and manufacturing, said one of the chief concerns with some of these peptides is that they have not undergone rigorous, long-term testing typically consistent with FDA-approved medications
Vitamin B12 is one of the 8 B vitamins that is an essential nutrient for proper bodily functions
There are many possible causes of B12 deficiency eg diet, PA, Coeliac disease, H Pylori infection, Crohns disease, internal parasites such as fish tapeworm, exposure to nitrous oxide plus others
Contact your provider and/or the pharmacy
People with unmanaged diabetes, untreated sleep apnea, or significant cardiovascular disease should also stay away, as the peptide could make things worse