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What is the correct dosage?

On the basis of guidelines provided by the US Food and Drug Administration and the World Health Organization, the National Research Council committee recommends dosage of potassium iodine tablets by age group as follows (see chapter 2 of the report for more details):

Group Predicted Thyroid Exposure (rema) KI Dose (mg) No. of 130 mg
KI Tablets
(100 mg I)
No. of 65 mg KI Tablets
(50 mg I)
No. of 32 mg KI Tablets
(25 mg I)
Adolescents and Adults 12 - 40 Years Old > 5 130 1 2 4
Pregnant and Lactating Women > 5 130 1 2 4
Children 3 - 11 Years Old > 5 65 1/2 1 2
Infants 1 Month to 3 Years Old > 5 32 1/4 1/2 1
Neonates Birth to 1 Month Old > 5 16 1/8 1/4 1/2