Both PQQ (Pyrroloquinoline quinone) and CoQ10
(ubiquinone) are antioxidant compounds used by the body, but they differ in many ways and, unlike CoQ10, which has been extensively researched in well-controlled clinical studies, only a few, small and relatively short clinical studies have been conducted with PQQ. See the Full Answer for more about PQQ >>
This CL Answer initially posted on 9/23/2014.
Last updated 8/8/2017.