I've been taking Iodoral for almost 4 years now.
It has really helped but it wasn't doing everything I thought it should including reducing the thyroid nodules.
So my stubborn soul relented to taking Niacin and Riboflavin with it. This is the ATP co-factors.
HUGE difference! Much more rapid shrinkage of the thyroid nodules. Still very tired and still have brain fog but at least I am moving in the right direction.