One 3-ounce serving contains 2.4 mcg of B12 (100% RDA). It is also an excellent source of protein, iron, and other B vitamins and provides some selenium and choline. Choosing lean ground beef ...

In some countries, vitamin D is listed in micrograms, and the relationship is as follows: 2.5 mcg (micrograms) = 100 IU. 5 mcg = 200 IU. 10 mcg = 400 IU. 15 mcg = 600 IU. 20 mcg = 800 IU.

The amount of vitamin B12 in an egg depends on its size and a large egg contains about 0.6 mcg of vitamin B12 in it. The recommended daily intake for most adults is 2.4 mcg, meaning one large egg ...

Sometimes higher amounts of B6, up to 100 mg ... that increases to 2.8 mcg daily, according to Harvard Health. No upper limit ...