Dr. Mercola's 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.Serving Size: 1 TabletServings Per Container: 90Amount Per Serving % Daily ValueMagnesium 80 mg 19%Other Ingredients:Dextrose, Malic Acid, L-Tartaric Acid, Adipic AcidSuggested Use: Adults, as a dietary supplement, dissolve one tablet in 16 oz (480 ml) of water and drink immediately. Do not swallow tablet directly.Keep out of reach of children. Do not use if safety seal is broken. If you are nursing, pregnant, taking medication or have a medical condition, consult your physician before taking this product.Generates 8 ppm of hydrogen per tablet in 16 oz. (480 ml) of water measured immediately after tablet dissolves.