Atomidine is an iodine substance referred to by the Cayce readings which is created using a modified detoxification process. This process adds an extra step in which electricity is run through the substance; the result is electrified atomic iodine, or "atomidine."

Atomidine is said to have amazing healing properties and a possible strong influence on the immune system. The electrification allows the atomidine to continue to function as an iodine suppliment—the original use of detoxified iodine—while also bestowing it with the added attributes that affect the immune system.

Atomidine is made in different ways by different manufacturers, each trying to interpret the Cayce readings as best they can. For example, two companies which make Atomidine

The Cayce readings do not name the final compound specifically; however, they do mention that the result is dissolved in alcohol, and iodine must be combined with potassium or chlorine to be water soluble. Atomidine as iodine in alcohol is claimed to be more powerful than iodine-trichloride; however, iodine-trichloride is water soluble. This may indicate that Cayce specifically intended for the substance not to be a water soluble form of iodine.