Iodine DRI

The Recommended Dietary Allowance (RDA) for iodine, as established by the Food and Nutrition Board of the Institute of Medicine, is 150 mcg per day for adults of both sexes, age 19 and up. This amount increases to 200-300 mcg per day for young children and 220 mcg and 290 mcg per day, respectively, for pregnant and lactating women.  Even if the dietary intake of iodine falls short of the recommended level, usually there will not be a problem with the production of thyroid hormones as long as the daily iodine intake is above 50 mcg. The Tolerable Upper Limit for iodine for adults has been set at 1,100 mcg /day.