The recommended dosage of Lugol's iodine depends on a person's condition and how the person responds to treatment, explains WebMD. For dietary purposes, about two to six drops daily suffices, according to the U.S. Department of Justice. An individual should use the medication's dropper to measure the oral dosage needed.
As of 2015, the recommended dietary amounts of iodine generally are 90 micrograms for children ages 1 to 8, 120 micrograms for ages 9 to 13, and 150 micrograms for ages 14 through adulthood. The RDA is 209 micrograms for pregnant women and 290 micrograms for women who are breastfeeding, according to MedlinePlus.