Oral bioavailability means it works in humans. Oral pharmacokinetics have been investigated in rats
In clinical practice, even straightforward injectable treatments benefit from sterile technique, proper patient evaluation, and staff trained to recognize and manage adverse reactions
However, two other forms hydroxocobalamin and cyanocobalamin become biologically active after they are converted to methylcobalamin or 5-deoxy adenosylcobalamin, said Dr Aravinda G M, consultant, internal medicine, Manipal Hospital, Jayanagar, Bangalore
Without an intrinsic factor, the body cannot absorb B12 from food, making lifetime B12 injections necessary
No relevant literature was identified regarding the diagnostic test accuracy, clinical utility, and cost-effectiveness of serum folate testing in people with suspected folate deficiency