baffled snot?

I believe this to be true that certain forms of Iodine are better than others. The water-soluble kind would seem to me to be the better one.
Here is some of what the writer says:

"Iosol Iodine is in my opinion the premier Iodine supplement on the market today. This is because of the superior water solubility of the iodine. This feature makes free Iodide readily available for your body to use.

There are two sources of iodine in the Iosol formulation. One is from kelp. Iodine in kelp is naturally in the form of potassium iodide. However, potassium iodine is not very soluble in water and may be difficult for your body to easily use. For example, if you get liquid potassium Iodide on your clothes it causes a permanent stain of red. If you get Iosol on your clothes the red will evaporate out in a few minutes or readily come out with washing. In fact, potassium Iodide has been shown to congest the thyroid gland when taken in high doses – which is how Hashimoto’s thyroiditis was first discovered (Japanese citizens consuming too many sea vegetables). This is why I don’t use Potassium Iodide in any supplement I produce.

During the production of Iosol, iodine is extracted from kelp and made into pure iodine crystals. This is not potassium iodide, rather it is an unbound form of iodine.

The second form of iodine used is ammonium iodide, a form that readily dissolves in water. These two forms of iodine are combined in a proprietary manner in a base of vegetable glycerin.

Ammonium iodide is a combination of the mineral iodine and ammonium (NH4). This is a synthesized compound, not derived from a food source. It has superior bioavailability as the iodine readily disassociates from the ammonium upon exposure to water, producing a free iodide ion – exactly what your body would like to use in metabolism.

The bottom line is that Iosol Iodine is a very safe and effective form of iodine to use as a dietary supplement. In my experience over the past twenty years it has routinely produced outstanding results. "