It is great that you realize that you need the iodine. If you want to start nicely you can do what I did. I actually took one glass of water and added one drop of iodine(mine is Dr. Clark's Sodium-iodide). Then I took half of it in another glass and added half a glass of water to it. Now you get two glasses of water with half drop of Iodine. I consumed one on first day and second on the second day. Third day I did a full 24 oz water bottle with one drop and drank it throughout the day. I did this for week and then upped it to 2 drops and week later to three and so on. Now I am at 5 drops per day.
Good luck and enjoy. I know I had a dramatic change in my health and behavior.