iodine nih in what foods
Dietary supplements. Many multivitamin/mineral supplements contain iodine in the forms of potassium iodide or sodium iodide. Dietary supplements of iodine or iodine-containing kelp (a seaweed) are also available. A small study found that potassium iodide is almost completely (96.4%) absorbed in humans [ 15 ].
The NIH adds that it's extremely important for women to get sufficient amounts of iodine during pregnancy. Before the fetal thyroid gland is developed properly, the baby depends entirely on maternal iodine intake. Breast milk contains iodine, but how much depends on how much iodine a mother consumes.