“Like all non pharma natural supplements it's difficult to say conclusively whether there are immediate benefits, but having researched the available evidence, I think it's worthwhile to take these.
Years ago there was some evidence that in one study it reduced breast cancer liklyhood, enough for me to have bought it for a very long time and be reluctant to stop.
I don't think more is necessarily better.
If older then ubiquinol seems much better absorbed than Q10”