Dr. Mercola has some articles on his site that seem to indicate that Armour is better than Synthroid. Here is an example:
http://articles.mercola.com/sites/articles/archive/2008/01/02/armour-thyroid.aspx
Also, Prism on this forum -
http://www.rawfoodsupport.com/ - has healed her thyroid with iodine. You can search on that forum for her name or for thyroid and iodine and you will find her posts. You can also email her privately if you want to ask her anything.
Last, I wanted to mention that I damaged my thyroid once by eating too many hi protein bars loaded with soy. My chiropractor figured it out and my hair got really bad. I quit eating those bars and all soy and my hair and thyroid have recovered.
If you want to search Dr. Mercola's site, you can find out why soy is so bad for your thyroid.
Good luck!