a nuclear power plant emergency occur that involves a release
of radiation, local and state officials may ask citizens to
evacuate or shelter-in-place as the primary public safety
measure. Potassium Iodide (KI) tablets can be taken as a supplemental
iodide is not an "anti-radiation" pill. It is only
a supplemental protective measure, secondary to evacuation
or sheltering in place. Evacuation and sheltering in place
remain the primary protective actions during a radiological
iodide protects the thyroid gland against exposure to radioactive
iodine in the unlikely event of a radiation release from a
nuclear power plant emergency. If taken in an appropriate
and timely dosage, potassium iodide can block exposure of
the thyroid gland to radioactive iodine. However, potassium
iodide does not protect other parts of the body from exposure
to other contaminants released during the emergency.
iodide should only be taken after specific instruction by
a state or local public health official.
information is available on the Governors' Office of Emergency
Services website at: www.oes.ca.gov.
Potassium Iodide (KI) to Take
Tablet = 130 milligrams of KI
18 Years and Older
or Nursing Women
12-18 Years Old
to One Tablet*
3-13 Years Old
1 Mo. to 3 Years Old
Birth to 1 Month
Adolescents approaching adult size (equal to or greater
than 150 pounds) should receive the full adult dose.
Who can take potassium iodide?
Most people can take potassium iodide without side effects.
A small number of people could have an adverse reaction. Anyone
with an existing thyroid gland condition or anyone allergic
to iodine or shellfish should NOT take it. Consult
your physician if unsure whether you should take potassium
taking potassium iodide mandatory?
No. The use of potassium iodide is voluntary. No one is required
to accept it or use it.
iodide can be purchased in some local pharmacies or ordered
from several commercial manufactures by telephone, mail, or
via the Internet. You may call for information regarding an
FDA approved product; "Iosat" (Anbex, Inc.), 1-866-463-6754.
more information contact:
Governor’s Office of Emergency Services
3650 Schriever Avenue
Mather, CA 95655
US Food and Drug Administration (FDA) Center for Drug Evaluation
and Research, Division of Pharmaceutical Analysis.
Guidance: Potassium Iodide as a Thyroid Blocking Agent in
Radiation Emergencies, December 2001.