This thread would be more appropriate in the general Supplement & Nutrition forum, because there are no Biotest supps that contain Co-Q10. Why that is, I couldn’t tell you. Biotest also doesn’t make a Vitamin D, for example, and that’s plenty beneficial.
There was some talk a while ago about trying to put together an effective and efficient multi-type formula, but I believe it ended up morphing in Elite Pro Minerals. That plus Superfood are as close to a “multi” combo they have.
As for what, when, and where for Co-Q10, you’ll just have to do some footwork and track down a company with a good reputation if you want to try it. It’s very not-kosher to ask about other brands on this site though.