Many vegans are reluctant to take vitamin B12 supplements because they are fearful that they will contain animal ingredients. This is unlikely because vitamin B12 is made by bacteria.

“Some people prefer to not take vitamin B12 because they feel it’s unnatural to take any supplements. I was one of them. However, I now understand that this rule applies only to people who live in a natural world where they can drink water from the river or pond and the fruits and vegetables grow in their backyard. However, everyone should still get their B12 levels checked and make sure they have healthy levels. In some countries, foods are fortified and levels may be okay. In others like India, one has to be more careful.” – Dr Nandita Shah

Vitamin B12 supplements have no known toxicity for all intent and purposes. Too much will not kill, too little can. Therefore, it is better to be safe than sorry.