The quick relief and long term
medications have effect on the airflow obstruction, airway inflammation as well
as bronchial hyper responsiveness.
The actions of anti-inflammatory drugs is
to reduce the asthma attacks. For instance corticosteroids lower airway
inflammation by inducing or inhibiting the production of end effector proteins.
The leukotriene modifiers prevent the action of leukotrienes, a major cause of
nasal congestion and inflammation. Theophylline
bronchodilators enhance the contraction of the diaphragm and relaxation
of the bronchial smooth muscles preventing an obstructive airway.