The difference between vitamin B12 and methylcobalamin is mainly whether it can be directly involved in the body’s metabolism.
Vitamin B12 needs to be assisted by endogenous factors secreted by the intestinal tract before it can be absorbed, and it participates in bone marrow hematopoiesis, promotes the development and maturation of red blood cells, prevents the occurrence of pernicious anemia, promotes the metabolism of carbohydrates, fats, and proteins, and is indispensable vitamin for the sound function of the nervous system.
And methylcobalamin is endogenous vitamin B12, present in blood bone marrow, can improve neuron conduction, promote nucleic acid, protein synthesis, repair damaged nerve tissue. It is used to treat megaloblastic anemia caused by vitamin B12 deficiency.
The human body’s vitamin B12 requirement is very small, generally as long as the normal diet will not be deficient.