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How Much B12 Do Vegans Need

(PubMed) Cavallito CJ, Bailey JH

The amounts of animal products are lower than our current diet: milk equivalents = 250g per day (1 glass of milk OR 2 slices of cheese per day) beef, lamb, and pork = 14g per day (1 hamburger per week) chicken and other poultry = 29g per day (1 chicken filet per week) eggs = 13g per day (1-2 eggs per week) fish = 28g per day (1-2 times fish per week) So if you eat these sustainable amounts, do you still get enough B12

But it has not been ruled out, and the FDA's briefing documents noted it as an uncharacterized risk requiring further investigation before any approval