The FDA stated it lacks sufficient information to know whether the drug would cause harm when administered to humans
B12 acts as a cofactor for two important enzymes: methionine synthase, which is involved in DNA production and methylation processes, and methylmalonyl-CoA mutase, which is essential for fatty acid metabolism and energy production
Chang, C., Tsai, W., Hsu, Y., & Pang, J
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Fraser et al, however, reported no resistance by patients to reducing the frequency of their injections
PubMed laboratory research record [PMID: 9439438] PubMed record related to this compound for laboratory literature review