Dr. Crozier discovered this powerful B12 supplement which transforms B12 into energy at the mitochondrial level. He recommends this supplement to patients who have been diagnosed with chronic fatigue and fibromyalgia, and other chronic conditions which include an extreme lack of energy. This is also an ideal supplement for individuals who have a high homocysteine level, also called hyperhomocysteinemia, which can contribute to arterial damage and blood clots in your blood vessels. Mitochondrial B12 contains 3000 mcg of vitamin B12 in its pure adenosylcobalamin form. Adenosylcobalamin is considered an active coenzyme form of B12, meaning it is used directly in B12-dependent enzyme reactions in the body.