My two cents - but I'm sure you already figure that out - I've read somewhere that if adrenals not in a good shape supplementing kelp/ Iodine too much creates more problems cause Iodine among other things speeds up metabolism (and probably detox). And helpgetting bromide out besides other HM.
Oh, and my belief is they recommended that dosage considering the pacient is doing also sauna and coffee enema which are supposed to help the body a lot getting the junk out.
I would also support the "slow and easy" approach although I too made the mistake :). Twice. I was taking Iodine by painting only 3 times a day and I was ballistic and megawired :) and after that was bedridden. Guess experiencing is part of the process.