“At age 70+, I take Quantum Cardio daily to support a healthy functioning heart. Prior to going to the gym, hiking or just to boost my energy and endurance levels, I use this in combination with Quantum COQ10(as a COQ10 booster), Men's Quantum Fuel and Performance Amino-GH. I also add Qultured Max Stress B and Qultured B12 and and Quantum Plant Iron to this combination. I believe this combination provides an effective energy and endurance booster as well as support for my heart and cardiovascular system. As a senior, Quantum Cardio gives me a daily sense of protection against possible heart and cardiovascular health issues, and is one of my essential, must-have daily supplements. In my opinion this is a super high quality and effective supplement. QNL packaging and delivery is excellent for all QNL producats. QNL supplements are sealed and packaged in violite bottles to prevent deterioration from light. Get some!!!”