The State of Maryland has taken advantage of the offer made by the National Regulatory Commission to receive a supply of Potassium Iodide (KI) Tablets for free distribution to Maryland residents who live within a ten mile radius of the Peach Bottom Nuclear Power Plant and the Calvert Cliffs Nuclear Power Plant. Following are the most frequently asked questions about Potassium Iodide.

What is Potassium Iodide (KI)?

Potassium Iodide or KI is a substance that is found in the human body.  It is available in tablet form, over the counter, without a prescription.  Taking a tablet of KI will protect your thyroid against the harmful effects of radiation that may be released from a nuclear power plant during a radiological emergency.

Is KI safe?

KI is safe and free of side effects in tablet dosage, except for people who are allergic to iodide.  If you have more questions or concerns about KI, call your doctor.

Why should I take KI during a radiation emergency?

In a nuclear power plant radiation emergency, radioactive iodide could be released into the air.  KI is taken to protect your thyroid in such an emergency.  By taking the tablet your thyroid absorbs non-radioactive iodide which keeps the thyroid from absorbing harmful radioactive iodide. KI will only protect your thyroid.  It does not provide protection against other radioactive materials nor external irradiation.

When would I need to take KI?

If any protective action is recommended because of a possible radiation release from the power plant, you will be told to take KI through the emergency alert system in your county. When the emergency sirens sound, you should turn to an emergency radio station.  You and your family will be told how and when to take KI.  Remember that evacuation, before any release, is the best protective action in a radiation emergency because it protects the whole body from radiation exposure.  However, if evacuation is not feasible or proper, and you and your family would be safer in your home, school or business, then KI should be taken to protect your thyroid.

How Much KI should I take?

Adults and children one year of age or older: One tablet (130mg), by mouth, once a day. Babies under one year of age: One-half (1/2) tablet, crushed, by mouth, once a day.  Health officials will advise the number of days for the KI to be taken.  Duration should not exceed 10 days.

How can people get KI?

Maryland residents living within ten miles of a nuclear power plant can obtain KI free of charge by calling their local health department for information. People who do not live close to a nuclear power plant can receive information about purchasing KI by calling their local health department, contacting a pharmacist or internet search, such as: