Here's a thread written by HennaHead, who took iodine while fasting. See if this gives you some ideas. For general information about iodine, read "Iodine Answers" at the top of the forum page. There are many links we can give you, and would be happy to, if you want expansion of the ideas brought up in Iodine Answers. For health maintenance, you can consider the possibility of 50-100 mg iodine, closer to 100 mg the bigger you are. Therapeutic doses can be more than that, depending on your desire to push. Each drop of 2% Lugol's has 2.5 mg iodine/iodide. Welcome!