b12 injections pain in arm sore after injection Should You Be Worried About COVID Arm? Does B12 Make Joints Ache?
Description
A deficiency invitamin B12can lead to various health problems, ranging fromfatigueto permanent neurological changes

The mechanism here is difficult to determine, however presumably stems from an increased production of transcobalamin II (22-24)

B-complex vitamins and B12 are both important for overall health, but they have different functions in the body and are taken for different reasons
a blog explaining why fortified foods and supplementation are the safest sources of vitamin B12
