Cardiovascular Health Supports Healthy Heart Muscle Promotes Cellular Energy Vegetarian Formula Coenzyme Q10 is a vitamin-like compound also called ubiquinone. It is an essential component of cells and is necessary for mitochondrial energy production. Years of research has shown that CoQ10 supports healthy cardiovascular and immune system functions in addition to its vital role in energy production. NOW CoQ10 is Pharmaceutical Grade (USP). NOW uses only the 100% natural, all-trans form of CoQ10 produced by fermentation.