This highest grade of Coenzyme Q10 is blended in a base of rice bran oil for enhanced absorption. Coenzyme Q10, also called CoQ10 or ubiquinone, is a natural substance essential to cellular energy production.* It is also an antioxidant that scavenges free radicals throughout the body and is involved in maintaining normal heart function.* CoQ10 works well with vitamin E and other antioxidants.