I have Hashimoto's thyroiditis and started taking Lugol's 2% solution 1-2 drops a day about a month ago. It helped me tremendously. I have more energy during the day and feel good again. Before that I was waking up in the middle of the night feeling horrible, restless and agitated. I would sleep later in the morning, but no matter how much sleep I got would crash around 4 pm, and at night, too.
Since starting the Lugol's, my metabolism has increased and I feel warmer, including my usually freezing hands and feet. I can feel the increased circulation there - my dry hands and feet are both improving in reduced dryness (no amount of topically applied oil/lotion/exfoliation had helped).I also started taking about 3 Tbs coconut oil a day and I believe that is helping as well.
My brain fog has disappeared - things just overwhelmed me before - now I can get things done again.
I also had some pain in my right breast that I assume was fibrocystic. I applied the iodine directly on the breast for three days and it is gone. Interestingly, I was nervous about taking iodine because I had heard maybe it wasn't good for Hashimoto's, so I stopped for two days recently. The waking up at night and feeling horrid returned AND I started to feel pain in the LEFT breast. After two days of resuming iodine and coconut oil both problems are GONE and I feel GOOD again.
On the downside, the iodine does increase my acne, which had mostly gone away over the years. I do think you need to start gradually with iodine to allow your body some time to release the bromide and other toxins that are attached to the receptors, and replace them with iodine. I will try to come back and let you know if the acne dissipates over time once while taking the iodine.