This active form of vitamin B12 aids in the production of neurotransmitters like dopamine and norepinephrine

http://jaredafxi198.tearosediner.net/the-role-of-vitamin-b12-in-red-blood-cell-production

This active form of vitamin B12 aids in the production of neurotransmitters like dopamine and norepinephrine, which are essential for mood regulation and focus