Doctors warn vegans to take risks of vitamin B12 deficiency seriously Veganism The Guardian Vitamin B12 Vegan Health Hi all. Read a comment on this page saying B12 Injections aren't vegan. Is this true? I've had quite a few done in the past and prefer getting injections because I forget Do you follow a vegan diet? Did you know that vitamin b12 is mainly present in animal based products so those following a strict plant based are more likely to be deficient in vitamin