Budesonide and formoterol combination is used to help control the symptoms of asthma and improve lung function. It is used when a patient's asthma has not been controlled sufficiently on other asthma medicines, or when a patient's condition is so severe that more than one medicine is needed every day.
Budesonide is used to control and prevent symptoms (wheezing and shortness of breath) caused by asthma. This medication belongs to a class of drugs known as corticosteroids. It works directly in the lungs to make breathing easier by reducing the irritation and swelling of the airways.