Coenzyme Q (CoQ ) also known as ubiquinone, is a naturally occurring biochemical cofactor (coenzyme) and an antioxidant produced by the human body. It can also be obtained from dietary sources, such as meat, fish, seed oils, vegetables, and dietary supplements. CoQ is found in many organisms, including animals and bacteria.
CoQ plays a role in mitochondrial oxidative phosphorylation, aiding in the production of adenosine triphosphate (ATP), which is involved in energy transfer within cells. The structure of CoQ consists of a benzoquinone moiety and an isoprenoid side chain, with the "10" referring to the number of isoprenyl chemical subunits in its tail.
Although a ubiquitous molecule in human tissues, CoQ is not a dietary nutrient, does not have a recommended intake level, and its use as a supplement is not associated with or approved for any health or anti-disease effect.