Viridian Co-enzyme Q10 30mg with MCT contain coenzyme Q10, also known as ubiquinone, which is a natually occuring substance and an essential component of the mitochondria - the energy producing unit within our cells. It is an antioxidant that occurs naturally in some foods which some people also chose to take as a supplement. Antioxidants are thought to be important to help the body fight the damaging effects of particles called free radicals. These can affect DNA and cell membranes.