since i made the observations i did when i was at 300mg of lugols, others have taken much more and been fine. i found magnets taped to the bottle of Lugols helped and i was able to double that to 600mg.

personally, i think the elemental in 100mg of Lugols is enough. you can add up to a gram or more of KI to that if you like. i like this SSKI 2%. i take about 600-700mg of that per day.