Home Preparation Procedure for Emergency Administration of Potassium Iodide Tablets to Infants and Children Using 65 Milligram (mg) Tablets

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If government authorities declare that a radiation emergency has occurred, you may have been exposed to radioactive iodine. Potassium iodide can prevent thyroid cancer in people who have been exposed to radioactive iodine. Potassium iodide is also known as KI. Children who have been exposed to radioactive iodine have a greater risk of thyroid cancer than adults do. You may need to make a KI solution (liquid form) for anyone who cannot swallow tablets. This sheet explains how to make and give the KI solution. FDA-approved KI tablets come in 65 mg and 130 mg strengths. Instructions for preparing the KI solution using two 65 mg tablets are given below. 

 To Make the Potassium Iodide (KI) Solution You Will Need:

  • Two 65 mg KI tablets 
  • Teaspoon
  • Small bowl
  • Four teaspoons of water
  • Four teaspoons of a drink. We recommend any one of the following:
  • White milk
  • Chocolate milk
  • Orange juice
  • Soda (For example, cola)
  • Infant formula
  • Raspberry syrup
  • Water

Directions for Making the Potassium Iodide (KI) Solution:
Step 1. Soften the KI tablets: 
  • Put two 65 mg KI tablets into a small bowl. Add four teaspoons of water. Soak the tablets for one minute. 
Step 2. Crush the softened KI tablets:
  • Use the back of the teaspoon to crush the tablets in the water. At the end of this step, there should not be any large pieces of KI. This makes the KI and water mixture. 
Step 3. Add a drink to the KI and water mixture:
  • Choose a drink from the list above. Mix four teaspoons of the desired drink with the KI and water mixture made in Step 2. Adding the desired drink makes the final KI solution.

Step 4. Give the right amount of the final KI solution, using the chart below.



How Much of the Final Potassium Iodide (KI) Solution to Give Each Day

The chart below tells you how many teaspoons of the final KI solution to give each day. The amount is based on the person’s age. Give this amount once a day until your healthcare provider or public health official says you may stop. 


AgeOnce Daily Dose of KI Solution
19 years and older
8 teaspoons
13 to 18 years (150 pounds or more)
8 teaspoons
13 to 18 years (149 pounds or less)
4 teaspoons
4 to 12 years 
4 teaspoons
Older than 1 month to 3 years
2 teaspoons
Birth to 1 month
1 teaspoon


Storing Any Extra Prepared Potassium Iodide (KI) Solution:
Store any extra final KI solution mixed in Step 3 in a refrigerator. Any extra KI solution can be used another day. After 7 days, throw out any unused KI solution. 


August 22, 2012








Page Last Updated: 09/08/2017
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