Methylcobalamin should not be used in patients with early hereditary optic nerve atrophy (Lebers disease)
It may difficult to extract 100% of the solution from the vial using the syringe
These needles have a smaller gauge and shorter length
Although methylcobalamin and vitamin B12 are terms used interchangeably, vitamin B12 is also available as hydroxocobalamin, a less commonly prescribed drug product (see Hydroxocobalamin monograph), and methylcobalamin
However, exclusive use of folic acid in treating vitamin B12 deficient megaloblastic anemia could result in progressive and irreversible neurologic damage
Vitamin B12 deficiency has occurred in breastfed infants of vegetarian mothers whose diets contain no animal products (e.g., eggs, dairy), even though the mothers had no symptoms of deficiency at the time