vitamin b12 treatment injection Methylcobalamin (Vitamin B12) Cyanocobalamin Vitamin B12 Injection 1000
Description
Vitamin B12 deficiency & levels of metabolites in an apparently normal urban south Indian elderly population

Nutrients, 8(2), 68

Because these injections are intramuscular, the nutrients bypass the digestive system

However, most cases are due to excess supplementation or due to a functional deficiency, where the person is actually deficient in B12
