Cas No. [58-55-9]
DRUG CLASS AND MECHANISM:
Theophylline belongs to a class of medications called
bronchodilators, used in treating asthma and other airway diseases.
Asthma is a breathing problem involving narrowing of the airways.
Airways are breathing passages that allow air to move in and out of
the lungs. Airways can be narrowed due to accumulation of mucus,
spasm of the muscles that surround these airways, or swelling of the
lining of the airways. Airway narrowing leads to symptoms of
shortness of breath, wheezing, cough and congestion. The narrowed
airways can open either spontaneously or from medications.
Medications that open airways are called bronchodilators.
Theophylline opens airways by relaxing the smooth muscles in the
walls of the airways. Theophylline can also be helpful in patients
with emphysema and chronic bronchitis when their symptoms are
partially related to reversible airway narrowing. Theophylline also
strengthens right heart function and diaphragm movement.