I had RAI, or as some call it I131, 3 1/2 years ago. I had a second treatment in January this year. Has your doctor prescribed beta blockers to block the effects of the hormone? I know for some people it helps a great deal with the racing heart. After my first treatment, it took about 8 to 9 weeks and then I became hypothyroid. But it only took two weeks for everything to start slowing down. I could not take the beta blockers because of having asthma. But I also started to have thyroid regrowth and had to have the second treatment. It’s different for everyone how fast it works. But if your not taking any beta blockers to help you with the effects of your hormone, check with your doctor.
If you want more information, let me know. If you prefer to read about it, I would recommend a book called “Your Thyroid, A Home Reference.” It’s a paperback and cost in the U.S. around $5.00. It’s excellent teaching material. It gives you alot of information plus it helps you learn what the normal ranges in blood work should be.
thanks Dave, yes i am on beta blockers for a year now and also on Lorazepam as well. i didn’t think that you can get hypo that quick after rai ,i better watch my self.i guess the big change is that i sleep normal now and my pulse has got weaker but still fast. doc says 5 months i will see a change but i dont trust the doctors any more they all tell you something different.