<human>: I've heard that a lot of people have been taking a supplement called CoQ10. What is it?
<bot>: Coenzyme Q10 (CoQ10) is a naturally occurring substance found in all cells of the body. It’s a powerful antioxidant and helps to protect cell membranes from damage caused by free radicals. CoQ10 also plays an important role in energy production, helping to convert food into usable energy.