I'm not vegan yet but other than trace amounts of dairy I'm eating a vegan diet. I drink soy milk every day, eat b12 fortified cereal at least a few times a week, and I'm sure I get it in other sources that I'm not aware of. The thing is I have read a lot of conflicting information about b12. Basically it ranges from vegan doctors and dietitians saying that products fortified with b12 or supplements are all you need to other, also seemingly reliable, sources saying that this is not "real" b12 but b12 analogues and that without real b12 from animal sources you will develop a host of terrible problems. I'm not really looking for anecdotes like "my friend was a vegan for 30 years and is fine"...I'm sure there are lots of stories like this and I don't doubt them at all but I would really love to read something from a unbiased (if this is possible) scientific source about the effectiveness of vegan b12 sources.