I had RAI when I was thirty. At the time, I didn't know about other options but was so ill, I jumped at the chance of getting better and took them at their word this was the right course to take. This was offered after year of unsuccessful treatment on anti thyroid drugs.
Now I'm much older and wiser! They simply mismanaged my anti thyroid treatment. I was not in control and didn't know any better, so I just followed their treatment and dosage regime.
I should not have been given RAI especially as I had thyroid eye disease (TED). RAI is contraindicated with TED and it made my symptoms much worse.
RAI treatment is the easiest and cheapest way of getting patients off their hospital lists - especially complex ones that are difficult and costly to treat. Once the treatment renders a patient hypothyroid (and don't be fooled into being told this won't happen) they can the sign you off back to the GP to be treated with thyroxine. Unfortunately the same is said for surgery. Although it costs more, the outcome is the same - they can be rid of you. Yes - it's a cynical view that they would hotly dispute.
I'm not saying for one minute that RAI or surgery is not the right option. What I am saying is that both these treatments are the final option because there is no going back from either.
My personal view is that RAI or surgery should only be considered after all other options for medication have failed - not because they have failed to give good treatment for hyperthyroidism.
This means treatment at the right dose for YOU and not just according to blood test results, which should only be used as a guideline.
Have they tried the 'block and replace' protocol? You are very young to be going down the road of both RAI and surgery unless they have tried everything else AND given optimal treatment in the process.