Which CoQ10 is best for fertility: Ubiquinol or Ubiquinone?

Which CoQ10 is best for fertility: Ubiquinol or Ubiquinone? Some weeks ago I received one of the best comments on my blog so far (thank you Iva S.). This is what Iva asked me: Dear Darja, first of all, I liked very much your book about improving egg quality in women over 35, it's informative and motivational, thank you [...]