Potassium Iodide (and Potassium Iod
ate for that matter) is sensitive to moisture in the air and becomes unstable if exposed to the least amount of humidity. Potassium Iodide that is stored in a bottle and opened daily to dispense will immediately start to degrade (oxidize and turn yellow). There goes all your Potassium Iodide just when you need it most!
With 100 - 200 pills in a bottle you would end up tossing most of it away!