For the posts about colds/flu working, I have not experienced anything positive from this. I did the emptying out of the nasal spray inhalation method. As soon as I started to feel the throat itching and the nose getting stuffy, I started. First day I did it four times with around four to five sprays each time. All that happened with myself is that I got more sick as you would expect with a cold. The only difference was the my lungs are achy now and I had the nastiest taste in my mouth. Just to see if there has been any benefit, I continued in the morning (after having a fever all night). Still no change. The only thing that has help thus far has been the cold medicine I finally taken. Wish I could say different, but so far, the cold seems to be running a normal course with no benefit of peroxide inhalation.