Nasal sprays are evil for more than just "stimulant" activity. First of all, if you have any trouble with high blood pressure they are not for you, because they cause your blood vessels to constrict. Second, you get the nasty phenomenon known as the "rebound effect," which means that when the medication wears off your nose gets even more tightly closed up and unbearable than it was before. I got myself addicted to the stuff when I had a terrible long-term cold-type illness several years ago. I would get so desperate to breathe that I would take a hit, and then when it wore off and I stuffed up even worse I would resist as long as I could. You are only supposed to hit it once every 12 hours, but let me tell you it doesn't last that long. I got to the point where I was taking a hit every two or three and boy is it a bitch of a habit to break. Nasty, nasty stuff.