Background As of 2020, ubiquinone, or coenzyme Q10 (CoQ10), was the 3rd most common nutritional supplement used behind fish oil and multivitamins. CoQ10 is a benzoquinone compound that is fat-soluble and is synthesized in the body from tyrosine. In its reduced form, called ubiquinol, this compound is the only lipophilic antioxidant that can be generated by cells. CoQ10 is mostly […]