When I first learned of so many of the health benefits - AND safety of Iodine supplementation - I had old prolamine Iodine tablets in my cabinet! I started taking one a day immediately and kept reading. Eight days later I was in a house with cats (I was horribly allergic all my life) and to my delight never had even one allergy symptom! I now take KI AND I and am benefitting even more!
I would suggest you take one of each daily, but start reading from the clickable link on the word Iodine in my post...especially the part about "companion" nutrients and detoxing should you decide to start supplementing!