Coenzyme Q10 / Ubiquinone

Mitochondrial antioxidant supplement promoted for cancer, immune support, and chemotherapy heart protection. CoQ10 is made naturally in the body and is sold as a dietary supplement. NCI PDQ notes small clinical trials and unclear benefit for cancer therapy, plus possible drug interactions. PROS Biologically relevant antioxidant involved in mitochondrial function; studied for cardioprotection and supportive care.