Since multiple species of Propionibacterium produce no exotoxins or endotoxins and have been granted GRAS status (generally regarded as safe) by the United States Food and Drug Administration, they are the preferred bacterial fermentation organisms for vitamin B 12 production
How much B12, and is there an upper limit
People with digestive issues may struggle to absorb oral supplements at all
It covers the same places, but may have larger groups, simpler food, fewer comforts, or shared transportation
You may also experience disturbed vision, pins and needles, muscle weakness, and changes in movement
This injection is necessary for the body, not just to prevent some minor symptoms