Thanks MH. For the time being though, he can use my Oregano Oil (83% Carvacol) imported from Turkey. I will mention the book, but also, what kind of dose of OOO do you suggest per day? I read somewhere that 3 drops diluted in a glass of pure water every hour would be good or is that too much OOO? I'm not sure how accurate that info was, so any suggestions would be great.