I read the article again. they are using 450PPM and drinking 16oz of it 3 or 4 times daily. thats insane. 5PPM is more than adequate for most infections & virus. just use it when you are sick. and only 5PPM you will never have a problem. I have been using this method for over 9years now (this dec will be 10years). no problem. and make it right. people on this forum know how to do it, listen to them.