What is the primary purpose of expectorant drugs?

The primary purpose of expectorant drugs is to reduce the thickness of mucus, making it easier to expel from the respiratory tract. These medications help to increase the production of respiratory tract secretions, which in turn helps to loosen and thin the mucus that can accumulate during respiratory illnesses or conditions such as bronchitis or pneumonia. By facilitating the clearance of mucus, expectorants assist individuals in coughing up phlegm more effectively, promoting better airflow and breathing.

This action is particularly important for individuals suffering from conditions associated with excessive mucus production, as it helps improve overall respiratory function and comfort.