Is anyone supplementing with liquid iodine for their thyroid or other medical conditions?

I have been doing some research on iodine and how important it is for a healthey thyroid and that we are lacking this nutrient in the U.S. because of the depletion in our soil. I have been thinking of taking a drop a day as my hair is thinning and I have brittle nails and other symptoms that a lack of iodine can lead to. I have been taking armour thyroid which is a natural form for a number of years.