CoQ10 is an antioxidant or a vitamin-like substance found naturally in almost every cell of your body, mostly in the cells of heart, liver, kidney and brain. Antioxidants are substances that help break down free radicals, which are molecules produced in the body that can cause damage. This compound is necessary for proper functioning of many organs and it is also involved in the many metabolic processes that occur in the body. Get CoQ10 supplement at NutraC.Read less