http://www.alkalizeforhealth.net/Liodine2.htm

Dr. David Brownstein says that fluoride inhibits the ability of the
thyroid gland to concentrate iodine and research has shown that
fluoride is much more toxic to the body when there is iodine
deficiency present. When iodine is supplemented the excretion rate of
the toxic halides bromide, fluoride and perchlorate is greatly
enhanced. Brownstein says that after only one dose of iodine the
excretion of fluoride increased by 78% and this is very important for
those who are drinking fluoridated water or are taking medicines with
fluoride in them; bromide excretion rates increased by 50%. Our
environment is loaded with the toxic halides bromine and fluorine and
up to now we have had no way to detoxify the body of these thyroid
poisons.

Also consider : http://vitamincfoundation.org/videos/#BROWNSTEIN

Inexpensive Oral Iodine (Trophic Brand is cheap and good) can be found
at most health food stores.