Cardiologists Say CoQ10 Is Usually a Waste—Choose Diet, Exercise, Sleep Instead

Cardiologists warn that CoQ10 supplements offer uncertain value for heart health and can interfere with medications like warfarin and diabetes drugs, making them a questionable use of time and money. They urge evidence-based lifestyle changes—eat a heart-healthy diet (Mediterranean/DASH), aim for at least 150 minutes of aerobic activity plus resistance training each week, and prioritize sleep—as more reliable ways to protect the heart, noting CoQ10 may have niche use only under medical supervision or in very specific deficiencies.