Most acute bronchitis cases will go away after a few days without treatment. While there isn’t any cure for chronic bronchitis, there are some medicines to keep it under control. Bronchodilators, drugs generally prescribed for asthmatics, clear mucus by opening bronchial tubes. These drugs are usually administered by a convenient inhaler. Mucolytics, which help loosen or thin mucus in the airways, are also effective to treat chronic bronchitis.