can you take b12 tablets with b12 injections Vitamin Injection Dosage Should You Take Natural vs.

In these cases, tiaminal B12 injection is a good way to get enough B12 without going through the digestive system

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At the cellular level, B12 acts as a cofactor for two critical enzymatic reactions: Methionine synthase converts homocysteine to methionine, essential for DNA methylation and synthesis Methylmalonyl-CoA mutase involved in fatty acid metabolism and myelin production By restoring adequate B12 levels, injections enable normal red blood cell maturation in the bone marrow, correcting the megaloblastic anaemia

PMID 34046142