the researchers discovered that the patient had autoantibodies that were targeting her CD320 receptors—molecules on the cells that normally help carry B12 across the blood brain barrier.

where your brain responds. Moreover, the vitamin helps your hair, nails and skin remain healthy. You can find B12 in four chemical compounds: methylcobalamin, hydroxocobalamin ...

Maintaining adequate levels of vitamin B12 is essential for overall health and wellbeing. This supplement contains methylcobalamin, the only form of B-12 that can cross the blood-brain barrier ...