For example, researchers found a single serving of beef liver can provide 71 mcg of vitamin B12, which is approximately 30 times the DV. Whereas a 3 ounce serving of sirloin only contained 1.4 mcg.

Pregnant women need 2.6 mcg of vitamin B12 a day and breastfeeding women need 2.8 mcg. Most people are able to get enough vitamin B12 from their diets, Allen says, so widespread supplementation ...

2.8 mcg per day For those who are deficient, doctors may recommend higher doses through supplements or injections. Vitamin B12 is produced by certain microorganisms, that live in the gut ...

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.

A recent study highlights that over 57% of male corporate employees in India suffer from vitamin B12 deficiency ... 2.4 micrograms (mcg) per day Pregnant women: 2.6 mcg per day Breastfeeding ...

Seniors often need more vitamin B12 due to reduced absorption. Recommended intakes are around 2.4 mcg per day ... aim for an intake of 800 to 1000 IU (20 to 25 µg) of vitamin D per day ...