The most important functions: Normal function of energy metabolism. Strong immune system. Reduction of tiredness and fatigue. Normal function of the nervous & psychological systems. Prevents macrocytic anemia. Vitamin B12 is an essential supplement for those who follow a vegan or vegetarian diet. Our vegan product provides 7.200% of the daily recommended intake of B12 to help you avoid deficiency. Some supplements use the cyanocobalamin form of B12, but ActiNovo B12 uses methylcobalamin.Cyanocobalamin is an inactive form of B12 that first must be converted by the body into the active form in order to develop its effect. Methylcobalamin, on the other hand, can be absorbed directly. One daily 180 mcg dose of ActiNovo Vitamin B12 is equal to the amount of B12 naturally found in 297 hard-boiled eggs!