What condition is theophylline primarily prescribed to treat?

Theophylline is primarily prescribed to treat asthma because it acts as a bronchodilator, helping to relax and open the airways in the lungs, thereby improving airflow. It is particularly effective in managing asthma symptoms and preventing asthmatic episodes. Theophylline works by inhibiting certain enzymes that lead to increased levels of cyclic AMP (cAMP), which is crucial for relaxation of bronchial smooth muscle.

While theophylline may also have uses in conditions like chronic bronchitis, asthma is the more common and primary indication due to its specific action against the inflammatory and constrictive components of the condition. It is not utilized for hypertension or heart failure, as those conditions require different pharmacological approaches that focus on different mechanisms of action within the body. Understanding this distinction is vital for anyone working in a pharmacy setting, as it relates to proper medication management and patient education.