Pharma nord bio quinone q10 gold 100mg coenzyme q10 is an essential cofactor of enzymes involved in the energy process coenzyme q10 is stored in mitochondria structures found within cells responsible for the generation of energy in the form of a molecule called atp tissues with a high energy requirement heart liver skeletal muscles contain higher numbers of mitochondria within their cells coenzyme q10 is also important within the body as a major fat soluble antioxidant protecting cell