Co-enzyme Q-10, or simply CoQ-10 is similar to a vitamin. Every single cell uses it. While it has a lot of jobs, one of the most important is producing energy. CoQ-10 does this in much the same way that a match can produce a bonfire. No matter how much material is there, it can’t burn without an initial ‘spark.’ CoQ-10 is the spark. Many people take CoQ-10 for heart health because the heart needs so much energy to keep beating normally.