PVP iodine has been shown to kill the virus in lab experiments.
I have it in a nasal spray.
Havent used it in my mouth because worried about staining my teeth
Betadine makes a gargle.
Interesting. I do the saline flush on a regular basis, as I have always had sinus troubles. Never tried iodine in the nose. I have actually tried a VERY dilute apple cider vinegar in the nasal flush. Very unpleasant, but works wonders at night.