Hi Pete

For pain, no, I have not come across options other than opiates or codeine. Codeine is over the counter in small doses in Canada (Tylenol 1) but adequate doses for pain without too much acetaminophen from the tylenol would require a prescription. Moot point if codeine is controlled in most countries.

Radioactivity: going by memory it is potassium iodide. The iodide saturates the thyroid preventing thyroid uptake of radioactive iodide. I don't believe iodine used in water purification would work unless it was reduced to the colorless form with vitamin c, but then dosing is hard.

As for my med list, forgot to include allergies, including benadryl, prednisone (prescription), and epi pens.

Eric