<prompt> Iodine RDA is300 micrograms200 micrograms150 micrograms50 micrograms  <response>: Requirement of iodine The daily requirement of iodine for adults is placed at 150 micrograms. The recommendations of WHO of 250 mcg per day for iodine during pregnancy have also been adopted. This amount is normally supplied by well- balanced diet and drinking water except in regions where Food and water are deficient in iodine. Ref:Parks Textbook of Preventive and Social Medicine 25th Ed Pgno : 662 