Ubiquinol is the reduced (active) form of coenzyme Q10. As the active form of coenzyme Q10, ubiquinol has superior absorption and higher bioavailability than other forms of coenzyme Q10 such as ubiquinone/ubidecarenone. Ubiquinol supports healthy energy synthesis, and is a highly efficient antioxidant to combat oxidative stress associated with increasing age, including oxidation of LDL cholesterol.