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Originally Posted by jmartinez  Currently, I take spirulina for my B-12 vitamin need. Lots of info about this wonderful "food" item on the net. Check it out. |
Not a good idea! Very close to every vegan book or website I've read says that spirulina and other vegan foods are not a reliable source of B12. Spirulina may provides B12 analogues, but these aren't B12, and can actually be a net negative.
b12 vegan spirulina - Google Scholar
has studies; general information can be found with searches like b12 vegan spirulina on google (rather than google scholar).
[I should note that vegan B12 supplements are a perfectly good source of B12 - the problem isn't whether a source is vegan or not, but rather whether it reliably provides actual B12.]