I take Lugol's iodine almost everyday (with Selenium). It dramatically upgraded my life. The first week could be wild (fever is expected) but people should know how this cheap supplement can help them.
It's a shame because the remaining 98% could get a lot of benefit and (setting aside the above) iodine is supposed to be the least toxic pure element. In the past Lugol's iodine was used as an antiseptic to put on cuts so I guess a fair amount got absorbed that way.