A 4-ounce raw serving contains 67 micrograms (mcg) of B12, nearly 3,000% of the recommended dietary allowance (RDA) for adults. Beef liver is also an excellent source of vitamin A, other B ...
Since your body stores B12 in the liver for extended periods, deficiency symptoms may only appear years after inadequate intake. The Recommended Dietary Allowance (RDA) for vitamin B12 varies by ...