You can expect KI to expire like NaCl does.
The filler might be not ok after a long amount of time, but the KI will be and that’s what saves your thyroid.
Here’s some info regarding dosage:

from: https://www.fda.gov/regulatory-information/search-fda-guidance-documents/potassium-iodide-thyroid-blocking-agent-radiation-emergencies

Thank you for the additional info.
I think I just wanted to believe there’s at least one religion that leads to good deeds and good deeds only. You may call me naive.

Someone doesn’t like our comments. Have we kicked a hornet’s nest? lol. I’ve only been able to see Buddhism practiced in the west. I couldn’t have imagined how horrible it can be practiced elsewhere.
In all fairness, what they do with animals is opposed to Buddhist doctrine.
Then again a lot of what (fundamentalist) Christians do is opposed to Christian doctrine.
The common denominator seems to be: horrible people doing horrible things in the name of $placeholder.

I’d love to get the long version, because from what I’ve gathered so far Buddhism doesn’t appear to be built around aggregation and (ab)use of power.
I may be completely off though and would like to have additional information!

Buddhism wants to have a word with you.