A search of MEDLINE using the search terms "cyanocobalamin or vitamin B12" and "weight loss ordiet" yielded no clinical studies using vitamin B12 supplements. Although no adverse effects have been associated with excess vitamin B12 intake from food and supplements in healthy people, weight loss pr...
Vitamin B12 (cobalamin) is an essential nutrient for humans and animals. Metabolically active forms of B12-methylcobalamin and 5-deoxyadenosylcobalamin are cofactors for the enzymes methionine synthase and mitochondrial methylmalonyl-CoA mutase. Malfunct