What we have been missing until now is a good study comparing the absorption of the more stable Ubiquinone, the oxidized form of Coenzyme Q10, expressed as Q10 or CoQ10, is absolutely essential for the mitochondrial ATP energy production process. Ubiquinone is the form of Coenzyme Q10 that the body synthesizes, and ubiquinone is the form of Coenzyme Q10 that has been extensively tested for safety, absorption, and efficacy in clinical trials.... Read more about this term Coenzyme Q10 supplements with the absorption of the newer and less stable ubiquinol Coenzyme Q10 supplements head-to-head. Now, the Coenzyme Q10 researchers at the University of Sevilla in Spain have carried out a direct comparison study in which the same study participants have been tested, with appropriate wash-out periods, on both ubiquinone and ubiquinol supplements.
The result: One well-formulated ubiquinone Coenzyme Q10 preparation – the same preparation used in the Q-Symbio study, the KiSel-10 study, and the Gulf War Illness study – has tested out significantly better than the ubiquinol preparation. This particular ubiquinone Coenzyme Q10 supplement had nearly twice the absorption response as did the ubiquinol supplement in the study.