I recommend 1 drop of 5% in your 16 oz. bottle of water, then drink 1 ounce daily for a week 1, then 2 ounces a day for a week, etc until you get to 1 drop per day in the water. This will take several months to get to 1 drop Iodine a day. Be sure you are taking all of the co-supplements: http://tinyurl.com/Iodine-Handout
The reason is that you are clearly extremely toxic in bromide, fluoride, chlorine and must therefore start Iodine at the minimal dosage.
This may sound crazy, but trust me, it has worked out extremely well for a great many highly toxic members I have worked with. In fact, that plan has even been too much for a few who had to titrate even more slowly.