make sure not to take it after 6pm - see if that doesn't help. Newport's right-on - you probably stirred up some lead and mercury, in which case the vitamin C + MSM will help. Truth be told - I know Iodine is an anti-parasitic and what's helped me a good deal is taking a bit of ornithine just before bed. If parasite die-off creates ammonia and ammonia is what Hulda believes (and I do too) creates a great deal of insomnia then it's interesting that I can fall asleep right away after taking ornithine. Makes me think that Iodine kills a lot more than we realize (of the bad stuff anyway).
The 'Adrenal Miracle Mix' has saved my butt on a number of occasions since starting Iodine therapy. My favorite blend right now is to make Nettle and Oat Straw Tea and that's been knocking the insomnia and anxiety.
The last thing I have to say is that taking a few drops of Ziolite when I'm feeling the 'jarred too much loose anxiety' has been absolutely amazing. The Ziolite with the Nettle/Oat Straw Tea is awesome.