I have taken it for almost two years and my thyroid is fine. I took over 100 drops per day for nearly two months. This caused some Acne and brown urine, so I backed off.
Iodine is very helpful. Essential in strengthening the immune system.
I have developed a taste for it. I drink ten drops of Lugols in a quart of water every day, sometimes twice a day. I like it better than tea or juice. I don't like the taste of water without it.
Someone at the Iodine forum said a distaste for it is an indication of toxicity. It has definitely tasted better and better to me as I have continued to detox with it. Or maybe you develop a taste for it like you do beer.