What are the side effects of Rai (Radioactive Iodine) for thyroid treatment ?

Here's a good website describing the procedure and potential side effects of the treatment. a href="http://www.cancer.org/docroot/CRI/content/CRI_2_4_4X_Radioactive_Iodine_Therapy_43.asp?rnav=cri" rel="nofollow"http://www.cancer.org/docroot/CRI/conten…/a