I've been suffering with sinus problems all winter. The only thing that seemed to help beyond what I was already doing (sinus rinses, humidifier, inhalation therapy) was Mucinex but after using it for awhile I started experiencing some most unpleasant side effects. I decided to pick up a copy of Dr. Robert Ivker's book, "Sinus Survival," to see if there were some other things to try. His easiest suggestion was to up your water intake, since most of us are dehydrated anyhow. Read more about his book at
http://bellaonline.com/site/allergiesandcolds 
