Hi Alison & Kelly, met a guy at a BBQ who has been using H2O2 for years, he noticed my persistent cough (seems to be with me all the time now , and gets worse near smoke ) anyhow next day he gave me lots of data to read and it seems to make sense. I am a bit worried about the immune boost , but would love the effect of extra oxygen coursing thru my system. I do feel a bit scared , just the words Hydrogen Peroxide send shivers thru my spine ( IT HAS TO BE FOOD GRADE AND THE % HAS TO BE WORKRD OUT CORRECTLY) but apparently taken in minute quantities and as directed it is relatively harmless . I am going to visit a guy today who is on steroids and had taken H2O2 for two years with good results, then stopped ,his health relapsed and is back on it. Will keep you posted , I will be doing lots and lots more research before I try it .With Kind regards Shelly .