Interesting bit about the possibility of B12 probiotics, I am not a medical Doctor, but the article is fairly tentative. https://www.b12-vitamin.com/gut-bacter

Interesting bit about the possibility of B12 probiotics, I am not a medical Doctor, but the article is fairly tentative. https://www.b12-vitamin.com/gut-bacteria/ https://www.b12-vitamin.com/gut-bacteria/