I thought I would look up the make-up of nasal mucos - good old net:
"Mucus is produced by submucosal cells as well as goblet cells in the respiratory system. It consists of mucin, a highly glycolsilated peptide. Upon stimulation, MARPKs (myrastine-alanine rich protein kinases) signal the binding of mucin filled vesicles to the plasma membrane. The fusion of the vesicles causes the release of the mucin, which as it exchanges Ca2+ for Na+ expands up to 600 fold. The result is a viscoelastic product of interwoven molecules called mucus."
-Source:
http://en.wikipedia.org/wiki/MucusOff to get my Degree in Nasal Mucos ;-).
There was a good article on the Boots web-site but still didn't tell us what it's made up of
but various salt nasal methods are discussed.
