Hi Laura,
Could you try some of these things:
TREATMENT
The following steps are often helpful in long term management of the tracheal collapse patient:
If any of the above listed secondary problems are of concern, they must be addressed. This may mean that the owner gives up cigarettes or that the dog goes on a formal weight loss program or other treatment to resolve the exacerbating problem.
Dogs with collapsed tracheas become unable to efficiently clear infectious organisms from their lower respiratory tracts. Antibiotics may be needed to clear up infection.
Cough suppressants such as Hydrocodone or Torbutrol may be handy.
Corticosteroids such as prednisone and related hormones cut secretion of mucus effectively but are best used on a short term basis only due to side-effects potential. Long term use may promote infection and weaken cartilage further.
Airway Dilators such as theophylline or terbutaline are controversial as they may dilate lower airways but not the actual trachea. By dilating lower airways, however, the pressure in the chest during inhalation is not as great and the trachea may not collapse as greatly.
This is the link:
http://www.marvistavet.com/html/body..._collapse.html