I'm trying iodine today for the first time actually, but not for the thyroid, I think its part of a general purpose 'detox' plan, its some sort of antifungal effect or antimicrobial, to try and correct candida. sibo etc. I will tell you if it improves my energy level, but I will start with low amounts e.g. half a drop, have to be careful with this stuff, its easy to overdose and you only should be taking a few drops per day.