b12 and amino acid injections Vitamin Injections: What You Need To Know Lipo B12 & Amino Injections

[21] Within cells, cyanocobalamin is converted to methylcobalamin and 5- deoxyadenosylcobalamin, coenzymes that participate respectively in homocysteine remethylation to methionine and in the isomerization of methylmalonyl-CoA to succinyl CoA, reactions essential for DNA synthesis, erythropoiesis, and myelin maintenance

Science 306 , 13831386 (2004)

First, there needs to be a determination if the deficiency actually exists or if there is a medical need for it

Some evidence suggests a link between low vitamin B12 levels to a higher risk of dementia, Alzheimers disease, and Parkinsons disease

Still, any time you put a needle in your arm or glute (common injection sites), theres a risk of some swelling at the site