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Potassium Iodide (KI)

The Ohio Department of Health (ODH) participates in a program sponsored by the United States Nuclear Regulatory Commission (NRC) to supply potassium iodide (KI) pills to the public within the 10-mile emergency planning zone (EPZ) around each commercial nuclear power plant.  The following counties are in the 10-mile EPZ:  Ashtabula, Columbiana, Geauga, Lake, Lucas, and Ottawa.

New replacement KI from the NRC arrived in 2020.  The new replacement KI has been distributed to the local health departments (LHDs) within the 10-mile EPZ.  Members of the public in the 10-mile EPZ should contact their LHD for information about the availability of KI.  During an incident, KI will be made available at evacuation reception/care centers. This new lot of KI (TU903A) has an expiration date of Oct. 31, 2029.  

The Ohio Environmental Protection Agency recommends disposing of expired KI by placing in the household trash.  The following table lists the expired lot numbers and extended expiration dates.

Lot # Brand Expiration Extension
 P200212  iOSAT – 130 mg  May 2009  
 TU801A  ThyroSafe – 65 mg  October 2014  
 TU902A  ThyroSafe – 65 mg  December 2014  
 TU401A  ThyroSafe – 65 mg  December 2019  June 2022
 TU404A  ThyroSafe – 65 mg  April 2020  June 2022

For more information:

KI Directive
NRC Website 
Extension letter 
KI Frequently Asked Questions (FAQ)
KI Fact Sheet
Health Effects of KI


Mailing Address:
Ohio Department of Health
Bureau of Environmental Health and Radiation Protection
Radiological Health and Safety Section
246 N High St
Columbus OH 43215

Telephone: (614) 644-2727
Fax: (614) 466-0381

E-Mail: Bradiation@odh.ohio.gov