Last update: 2.5.2017.


Supplement Watch - Iodine

General information for Iodine

Main function is in the synthesis of thyroid hormones, thyroxine and triiodothyronine.

Benefits of Iodine

Deficiency symptoms / disease

Mental retardation. Mental slowing. Goiter. Depression. Extreme fatigue. Weight gain. Breast cancer. Stomach cancer.

Overdose symptoms / disease

Overdose of iodine has similar symptoms than deficiency. Abnormal growth.

FDA facts for Iodine

(Daily value/Recommended dietary allowance/Adequate intake)

Recommended intakes of nutrients vary by age and gender and are known as Recommended Dietary Allowances (RDAs) and Adequate Intakes (AIs). However, one value for each nutrient, known as the Daily Value (DV), is selected for the labels of dietary supplements and foods. A DV is often, but not always, similar to one's RDA or AI for that nutrient. DVs were developed by the U.S. Food and Drug Administration (FDA) to help consumers determine the level of various nutrients in a standard serving of food in relation to their approximate requirement for it. The label actually provides the %DV so that you can see how much (what percentage) a serving of the product contributes to reaching the DV.

Data from U.S. Department of Health & Human Services, National Institutes of Health, Daily values.

RDA/AI value not found in database

Food sources for Iodine

Baked potatoes


Dried seaweed


Iodized salt


Baked turkey breast

Dried prunes

External links

Wikipedia-Iodine MedlinePlus-Minerals NIH-Iodine