A gallon of Iodine would be pretty common on a breeding operation. It is used to disinfect umbilical chords on foals. Usually done immediately after birth, or as close as possible, and most often squirted from a distance. In other words some of it misses the mark.

Hydrogen peroxide will burn a newborn's skin - quite severely - it eats healthy as well as unhealthy flesh. Iodine can also but is the lesser of the two. Iodine can also be used with DMSO (mixed) and squrted on open wounds to facilitate healing. Anyway that is what we use it for. We have about 8 head of horses with one to three new foals a year. A gallon is about 2 years worth of supplys for us. But then our refrigerator is also holding a broad assortment of syringes, anti-biotics, and other items that saves us a bundle by not having to use the Vet Clinic.

And I know of nothing that it can be made into that would be harmful - unless you drank it?

Steve