The following information is from the Pennsylvania Department of Health:

"The Department of Health will provide free potassium iodide tablets Thursday, Aug. 8, to Pennsylvanians who live, work or attend school within a 10-mile radius of one of the state’s five nuclear power plants.

Potassium iodide, or KI, can help protect the thyroid gland against harmful radioactive iodine when taken as directed during radiological emergencies. Individuals should only take KI when told to do so by state health officials or the governor.

Read more: [link to www.wgal.com]