Standard disclaimer: I’m not a health care provider, which isn’t clinical guidance. For those who suspect there is a vitamin B12 deficiency, go see a physician and get Qualified guidance. B12 has to bind with proteins generated from the abdomen, so if you don't make ample you will not have https://thebookmarklist.com/story13950622/5-simple-statements-about-b12-supplement-for-vegan-diet-explained