Cobalamin is present in many foods. Liver, eggs and fish. If you choose organic foods, so not exposed to modern technique, the support of B12 is assured. Really, I had not B12 deficiency in the past due to my non-vegan diet. I do not want to have the addiction to B12 pills due to vegan diet. This practice is not natural. Try to choose certified organic foods instead, supporting the old agriculture and farming practices.