Support energy with Superior Source B-12 with B-6 and Folic Acid MicroLingual formula. Fast absorbing, each tablet deliver 1000 mcg of B-12 400 mcg folic acid and 2 mg vitamin B-6. B-12 is known for supporting energy. B-6, which also promotes energy metabolism, also nourishes the cardiovascular system. Folic acid promotes and maintains new cells and supports nervous system health, energy metabolism and healthy heart function.