If B12 is primarily from animal sources, where do the vegetarian ones come from?

Question

err I meant vegetarian dietary supplements.

Answer 1

B12 isn't "from" animal sources: it's a bacterial product. It just happens that meat is contaminated with bacteria more often so some good ones slip in as well. Anything "fortified" with B12 can still be vegan, as it's farmed from bacteria.

Answer 2

There has been considerable research into proposed plant sources of vitamin B12. Fermented soya products, seaweeds, and algae such as spirulina have all been suggested as containing significant B12. However, the present consensus is that any B12 present in plant foods is likely to be unavailable to humans and so these foods should not be relied upon as safe sources. Many vegan foods are supplemented with B12.
Read more ab out this from the Vegetarian Society Web site:

Answer 3

Yes, the plant sources of B12 aren't bioavailable, and thus are pretty useless, the amount created in the gut is rather minimal and isn't enough for our bodies by a long way.

Many products can be fortified with B12, I don't know about the US but here most or our cereals a fortified, whether we're veggie or not.

Answer 4

I took a supplement when I was practicing vegetarianism. A great line of isotonic vitamins too!

Answer 5

For me, a lacto ovo vegetarian (the most common type) I still eat dairy and eggs so it's not an issue. Fermented soya products nare a good source for those who do not eat dairy or eggs.

Answer 6

Vegetarians can take a common multiple vitamin or B-12 supplement, or enjoy fortified cereals or soymilk to get a reliable source of B-12.

Protein: almonds, black beans, brown rice, cashews, garbanzo beans (chickpeas), kidney beans, lentils, lima beans, peanut butter, pinto beans, seitan, soybeans, soymilk, sunflower seeds, textured vegetable protein (TVP), tofu, vegetarian hot dogs and burgers

Iron: black beans, bran flakes, cashews, Cream of Wheat, garbanzo beans (chickpeas), GrapeNuts, kidney beans, lentils, navy beans, oatmeal, pumpkin seeds, raisins, soybeans, soymilk, spinach, sunflower seeds, tofu, tomato juice, whole wheat bread

Calcium: almonds, black beans, broccoli, calcium-fortified orange juice, collard greens, great northern beans, kale, kidney beans, mustard greens, navy beans, orange juice, pinto beans, sesame seeds, soybeans, soymilk, textured vegetable protein (TVP), tofu

Answer 7

It is also produced in the small intestine. Intrinsic factor

Answer 8

Eggs, dairy products and nutritional yeast.