Co-enzymes are organic molecules that bind to an enzyme for a short time and take on the role of electron donors or receivers. They help the enzymes in the human organism to accelerate reactions. Unlike enzymes, co-enzymes change as a result of the reaction and thus have to be renewed by the body. The best known eo-enzyme is Q10, also called ubiquinone. You can find this in the Fairvital online shop in different dosages as capsules and tablets. The most popular Q10 supplement is the Co-Enzyme Q10 200 mg - 90 capsules.