HERE IS HOW ONE SUPPLEMENTS WITH PURE BORAX (which is also an Ionic form of Boron when taken into the body): Dissolve a lightly rounded teaspoonful (5-6 grams) of Borax in 1 quart of filtered water. (Pour a small amount of boiling water in the quart jar first and stir to dissolve; then fill the jar with cold, filtered water.) This is your concentrated solution, keep it out of reach of small children.
For the Standard Dose: 1 teaspoon (5 ml) of concentrate. This has 25 to 30 mg of Borax and provides approximately 3 mg of Boron. If you have no specific health problems or for maintenance you may consume with 1 or 2 teaspoons daily.