I agree about Iodine not supposed to give you a speedy feeling, but I think Iodine initially brought me up to feeling "normal" which to me felt speedy.
I've been extremely fatigued for years.. No energy, tired, and hard to stay focused and to concentrate. Doing basic things felt like a lot effort and I had no energy.. I've just adapted to it over the years and it wasn't until I started experimenting with Iodine that I realized that feeling fatigued all the time isn't supposed to normal..