Amiodarone can cause thyroid dysfunction.
If you do a search using the words amiodarone and thyroid you will find much to read about.
sorry...also forgot to mention that I had atrial fibrillations before RAI as I was Hyperthyroid and Thyroid Cancer. Rai was done as surgery was too dangerous at the time. Its been 15 weeks since RAI and I went hypo at 5 weeks after RAI and have been on Eutroxsig since then but climbing up in slow doses.
I am on Eutroxsig.....are you sure you spelt it right?
Message me if you have and I will reply.
Debs
Sounds you have hypothyroid, look for the hypothyroid symptoms on the web, you should see lots of them. but the Eutirox should help you.