- High cholesterol levels, high blood pressure, and smoking are major factors for heart and arterial disease. Coenzyme Q10 is a natural substance that resembles vitamins and has an effective role in the functions of the cardiovascular system, including: - It plays a major role in biological and chemical processes to provide heart cells with energy. - It acts as an antioxidant, which prevents free radical damage to heart cells. - It helps in cases of inflammation and also helps the body’s cells to utilize fats