Potassium Iodate, frequently purchased under a brand called IOSTAT, do not expire. Potassium iodide is not an antibiotic, anti-viral, or a vitamin that is subject to aging or oxidation anymore than potassium chloride (table salt) is.Okay, for all you cosmoline gun buryin', water filtratin', food stockin', hatchet carryin', fire makin', shelter buildin', ham radioin', N95 maskin' son of a guns remembered to stock potassium iodate tabs AND have checked the expiration date recently?
The pills do not go bad.. ever.
The expiration date on them is a function (misapplication) of FDA laws.
Far more comical, is the idea that tens of thousands of preppers will stock these pills and not have the slightest clue of when to use them or why.. and in many cases, even how. Ask a hundred preppers if they have a Geiger counter, and 99 of them will say no.. ... then ask the last guy how much radiation is too much, and he'll just look at you with a blank stare.
Don't even bother asking about the differences of ionizing vs non-ionizing radiation.
Preppers, on average, are not a very bright bunch of folks, and very few of them have any idea on the differences between Alpha, Beta, Gamma or Neutron radiation, or what to do about each.