Hi grzbear!
Maybe you can help out with a bit more Iodine info?
Hulda Clark recommended brushing Lugol'sIodine on the sole of your feet to allow the body to absorb it as needed. One could tell the amount needed by the speed of which the stain was absorbed by the body.
Lugol's is a mix of Iodine and potassium Iodide and she claims is fully absorbable by the body.