Vitamin B12 is found almost exclusively in animal products. Therefore, those who follow a vegan or vegetarian diet should take vitamin B12 through supplements such as our B12 drops. The term vitamin B12 refers to different forms of cobalamin. The active forms in the body are methylcobalamin and adenosylcobalamin. We also use these two forms in our B12 drops. Unlike synthetic cyanocobalamin, which is often used in vegan supplements, the body absorbs and utilizes the active forms better.