I have pernicious anemia. I've been on injections for two months and supplement with oral on days I don't get injections. I've been suffering from diarrhea. I have lost some of the numbness/tingling symptoms, but not many of the others. Is it possible to be allergic to the B12 injections themselves? Perhaps the preservatives that are along with the B12? My Pharmacist can't get the more natural B12, only the Cyano (he said the other B12 isn't stable for more than a few days).
What does anyone think?