Generates 8 ppm of Hydrogen Per Tablet†Dietary Supplement Dr. Mercola has been providing quality products since 2001. Our H2 Molecular Hydrogen tablets create far higher concentrations of up to 8 ppm in 480 mL of water. And it does it in an open container without the need for a cap or lid. Our H2 Molecular Hydrogen uses a special grade of pure elemental magnesium as its carrier and provides you with approximately 80 mg of magnesium per tablet. So, you receive not only valuable H2 with our product but also highly bioavailable magnesium for a healthy brain, muscles, cells, kidneys and heart. †Generates 8 ppm of hydrogen per tablet in 16 oz. (480 ml) of water measured immediately after tablet dissolves.