I don't remember where this came from, we have been using it for so long. But my family and friends have had great success using this. My sons tonsils were soo swollen that he could not swallow his own saliva, had to go to er to get IV from dehydration, and dr. said that his tonsils needed to come out. He constantly had sore throats. Well he still has his tonsils, and is not bothered by sore throats anymore. This mixture is suppose to kill 99% of bacteria.