Xanthines are used for the prevention of which symptoms?

Xanthines, a class of medications that includes theophylline, are primarily used for their bronchodilator effects, which help to relax the muscles around the airways. This action is particularly beneficial in managing chronic obstructive pulmonary disease (COPD) and asthma. The correct answer highlights that xanthines are utilized for both chronic obstructive pulmonary disease and asthmatic symptoms.

In chronic obstructive pulmonary disease, xanthines can ease symptoms like wheezing and difficulty breathing by reducing airway resistance and improving airflow. For asthma, while they are not the first-line treatment during an acute attack, they can help manage chronic symptoms by providing a sustained bronchodilation effect, which assists in the control of asthma over time.

This dual action makes xanthines particularly useful in the management of both conditions, explaining why the combination of chronic obstructive pulmonary disease and asthmatic symptoms encompasses the appropriate use of these medications.