Fortified Sources
Foods fortified with B12 are also sources of the vitamin although they cannot be regarded as true food sources of B12 since the vitamin is added in supplement form, from commercial bacterial production sources, such as cyanocobalamin. Examples of B12-fortified foods include fortified breakfast cereals, fortified soy products, fortified energy bars, and fortified nutritional yeast. The UK Vegan Society, the Vegetarian Resource Group, and the Physicians Committee for Responsible Medicine, among others, deny that non-animal food sources of vitamin B12 are reliable and recommend that every vegan who is not supplementing consume B12-fortified foods. Not all of these may contain labeled amounts of vitamin activity. Supplemental B12 added to beverages in one study was found to degrade to contain varying levels of pseudovitamin-B12. One report has found B12 analogues present in varying amounts in some multivitamins.
Read more about this topic: Vitamin B12 Deficiency
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