[YEA] I read about putting 3 drops of hydrogen peroxide in your ears to stop colds & flu on Dr Mercolas website and thought it was quite interesting. They claimed it was successful in 80% of cases if administered within 12-16 hours of the first symptoms appearing. It's midwinter here and everyone in the office came down with a cold, and shortly after I woke with a headache and a sore throat. I checked on earthclinic that others had tried this first, which they had, so that night after work I syringed warmed hydrogen peroxide into my ear canal, (probably more than 3 drops as a pretty much filled the ear canal) lay down with a timer for 10 mins on each side, drank down a large dose of vitamin c, and the next day no symptoms of a cold what-so-ever. I wouldn't have believed it if I hadn't tried it myself. It's a fantastic remedy and over 3 weeks later I still haven't had a cold. I've tried putting the drops in since but they didn't bubble like the first time which I assume means no infection was present. I would recommend trying this if you're in the first stages of cold symptoms as you have nothing to lose.