Salt
The amount of iodine and the specific iodine compound added to salt varies from country to country. In the United States, the Food and Drug Administration (FDA) recommends [21 CFR 101.9 (c)(8)(iv)] 150 micrograms of iodine per day for both men and women. US iodized salt contains 46–77 ppm (parts per million), whereas in the UK the iodine content of iodized salt is recommended to be 10–22 ppm.
Nascent iodine (dietary supplement)
Nascent Iodine sometimes known by the generic term atomic iodine or generic trademark name Atomidine or by the detoxified iodine, is a liquid orally administered supplemental form of iodine, claimed to be in a and monatomic state, originating from a 1931 Edgar Cayce formula. The concept of nascent state has been debunked. Thus, nascent iodine does not exist and medicines purporting to contain this substance are misrepresentations.The preparation was first conceived in 1931 by American Christian mystic Edgar Cayce in two channelled "readings" for an Indian inventor by the name of Shankar Bhise who inquired about how to improve an iodine medicine. Cayce regarded this specially formulated "atomic" iodine as far easier to assimilate than other forms. Cayce recommended this atomic iodine or "Atomidine" as a therapeutic measure, in over 600 "readings". Extracts from some of his readings: