Methylcobalamin B12 is involved in the production of SAM-e (S-adenosylmethionine)

http://gregoryckzb698.yousher.com/what-you-should-know-about-vitamin-b12-and-neurodegenerative-diseases

Methylcobalamin B12 is involved in the production of SAM-e (S-adenosylmethionine), a compound that plays a vital role in mood regulation and joint health