... ubiquinone, ubidecarenone, coenzyme Q, and abbreviated at times to CoQ10, CoQ, Q10, or simply Q) is a 1,4 ... -benzoquinone, where Q refers to the quinone chemical ... Mayo Clinic "CoQ10 has been used, recommended, or studied for numerous conditions, but remains controversial as ... not enough scientific evidence to recommend for or against the use of CoQ10 in patients ...