They make supplement companies richer. Other than that, "more studies are needed": https://health.clevelandclinic.org/what-is-coq10/ https://health.clevelandc

They make supplement companies richer. Other than that, "more studies are needed": https://health.clevelandclinic.org/what-is-coq10/ https://health.clevelandclinic.org/what-is-coq10/ (Every solid potential benefit is larded through with how inconclusive the studies are. The only thing they're willing to actually say is that CoQ10 is probably harmless. I couldn't even find that much about CoQ4.)