CoQ10 is clinically proven to support heart health and is necessary for energy production.  CoQ10 is an essential component of the mitochondria-the energy-producing units in the cells of the body. Since heart cells can't function without energy, they can't function without CoQ10. And since each heart cell has more than 2000 mitochondria-the highest concentration anywhere in the body-CoQ10 supplementation is important to meet the heart's high energy needs.