Doxofyl (Doxofylline) is a very potent bronchodilator medicine. It relaxes the smooth muscles of the airways leading to the lung. This medicine is used as a maintenance treatment for wheezing, shortness of breath, chest tightness associated with lung diseases like asthma, chronic bronchitis, emphysema etc. Doxofylline is used for Asthma and other obstructive diseases. This medicine is not recommended for use if you have suffered from a heart attack in recent times.