Hello and welcome – There is a ton of information out there on the Internet, and unfortunately, much of it is bogus.
To my knowledge, none of the issues that you mentioned are associated with Methimazole. There *are* some potential side effects, though; this web site has some good info:
(Note on links: if you click directly on the following link, you will need to use your browser’s “back” button to return to the boards after viewing, or you will have to log back in to the forum. As an alternative, you can right-click the link and open it in a new tab or new window).
http://www.nlm.nih.gov/…/druginfo/meds/a682464.html
Also, when you picked up your prescription at the pharmacy, you should have been given a sheet that explains potential side effects. Yes, there are risks to methimazole (as with *any* prescription med), but the risks of letting hyperthyroidism go untreated are much greater.
As for diet, you will hear all sorts of conflicting recommendations. Most docs will recommend avoiding major sources of iodine, such as supplements and the seaweed wrap that comes with sushi. Many patients also choose to minimize their intake of processed foods with unpronounceable ingredients and instead focus on eating whole, unprocessed foods.
