[RC one]

probably not but then again, “be prepared”. I wonder what the shelf life is?

[meyer]

I wonder what the shelf life is?

Couple of years. Should have an expiration date on the side of the package.

[codder too]

Shelf life of KI is very long as long as tablets are kept dry. Our supply has been vacuum sealed. Use your food vacuum sealer bags, if you have one. Works well.

We live within 20 miles of Three Mile Island. Local towns here have distributed KI "free" periodically, for years.