Methylcobalamin B12 is involved in the production of acetylcholine, a neurotransmitter essential for memory, learning

http://elliottdsju207.fotosdefrases.com/vitamin-b12-your-ally-in-combating-seasonal-affective-disorder-sad

Methylcobalamin B12 is involved in the production of acetylcholine, a neurotransmitter essential for memory, learning, and muscle function