Check out our top picks below. Nature Made Vitamin B12 1000 mcg sublingual supplement is a great option for anyone looking to support their energy metabolism. The tablets dissolve quickly under ...

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 ...

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.

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 ...