doses of b12 injection Vitamin B-12 Cyanocobalamin B12 Shots Dosage for Adults:

soluble in glycerin

Researchers have linked suboptimal and deficient B12 levels to:(8-12) memory problems and cognitive decline depression, mild anxiety and even higher anxiety levels Other mental health concerns including OCD loss of overall brain size in the elderly Restoring B12 to healthy levels -- via dietary changes or supplementation -- may help to reverse health issues related to sub-optimal B12 intake

Second, Alpha interferon which is a type of interferon 1 can cause tolerance disruption of myelin sheath antigen (222)

[153] There is evidence that for elderly people, physicians often repeatedly prescribe and administer cyanocobalamin injections inappropriately, evidenced by the majority of subjects in one large study either having had normal serum concentrations or having not been tested before the injections