Please read Grizz's post thouroughly. He has a wealth of knowledge on this subject and documents it well.
My advice is to take one drop of Lugol's in one glass of water in morning first day and take all co-supplements in the evening. But some take all during the day time.
Then take two drops next day, then three drops, and slowly build it up. You can easily go to 24 drops and then back down to one drop. Wait a week. If you have a doctor who does 24 hour urine test to measure Iodine in your body, that will tell you if it is within the range or not.
Then you can take 5 drops everyday as a supplement.
Iodine is most essential element for your thyroid. And thyroid controls many reactions in your body.
Lugol's was a French doctor who used Iodine solution for TB and other diseases. You can also read a book by Dr. Brownstein, Iodine-Why do you need it?