Theophylline 125 Prolonged Theofin PR 500 Tabs by Inter Pharm

 is used to treat airflow obstruction symptoms such as wheezing, shortness of breath, and chest tightness related to asthma and lung diseases, including emphysema and chronic bronchitis.

Theophylline is in a class of drugs called bronchodilators, which relax your bronchial smooth muscles, widening air passageways in your respiratory tract (the bronchi and bronchioles).

This process allows more air to get into your lungs, and lets you exhale more effectively.

The drug also suppresses your airway responses to stimuli, helping prevent some asthma attacks.

Theophylline may be prescribed off-label to treat sleep apnea or asthma attacks that aren't responding to other treatments. It's also sometimes used for breathing problems in premature infants.