I posted the comment, not in response to the need for potassium iodide, but a comment on the medical requirements of the need for dietary iodine, hence the comment "a little off thread"...I have reduced my dietary intake of table salt (NaCl) for health reasons, and overlooked the need for trace amounts of iodine added to iodized salt when I switched to kosher salt for its texture...I do realize the difference between micrograms and milligrams...I taught Stoichiometric calculations for 30 years