Coenzyme Q10
CoQ10 appears in higher-end men's formulas, including Legion Triumph and Myprotein Alpha Men. Product copy usually describes it as supporting cellular energy, which is why it shows up in blends that also carry B vitamins. Vitamins do their work inside cells, and CoQ10 is the compound the body already makes to help that process along, so the pairing is deliberate rather than decorative.
It is one of the most common premium add-ons in the category. If a formula lists it, check whether an amount is given. Ubiquinone and ubiquinol are two different forms, and a panel that names the form and the milligram figure tells you far more than one that only lists the word.
Read for: form named, amount printed, whether it sits with B vitamins.