A couple of years ago, some of us in a group I'm in started taking 50 mg Lugol's. Then we took the 24 hour Iodine loading test. We tested really low. Most of us immediately switched to Iodoral. We immediately felt better on Iodoral than we did on Lugol's. I have no idea why but we got an extra ping!
A few months later, the Iodoral people retested and our urine levels were significantly higher.
The Lugol's people REMAINED very low despite high dosing. One woman's test was low after TWO YEARS of daily Lugol's-- but she had been taking it for FOUR YEARS intermittently from a Hulda Clark protocol.