I keep finding reference to it but with very little detail on dilution as a gargling agent for head and neck cancer. I have found 7.5 to 15 percent to be the recommended dosage. The salt water baking soda makes everything I eat taste like pure sea water. I mixed a new batch yesterday at 15 percent and it is quite tolerable and soothing. I asked my Oncologist about it and he looked at me like a monster with two heads. Told me to drop the salt and just use the baking soda. Since the two need to react to one another there is obviously no point to drop one. Asked the nurse and she told me not to swallow the iodine. I have cancer- I'm not a moron. I'm starting week five today and can still swallow and eat and am keeping the sores to a minimum. Personaaly it seems to be a reasonable alternative to the salt and baking soda with better results.