I would leave the scope alone. Look on the bottle and see if the ingredients consist of sucralose. If so that may be your problem. This sweetner caused sores in my mouth and stripes on my tongue. This product is a chlorine which is what your trying to avoid while on iodine.
I store it in an old glass spice jar and keep it in the bathroom for daily use.
I Op with this mix and also apply it to my gums, face, neck, arms and elbows each night. I burnt the roof of my mouth last week and this worked great.