<s>[INST] What are relievers? [/INST] Relievers or airway openers are medicines that provide rapid relief from an asthma attack by quickly opening up the narrowed airways (dilating the bronchi). They do this by relaxing the muscles surrounding the airways, and are known to doctors and other asthma professionals as bronchodilators.There are two types of airway openers short-acting bronchodilators and long-acting bronchodilators. The most widely used short- and quick-acting airway openers are salbutamol (also known as albuterol) and terbutaline. Salmeterol is a long-acting airway opener that has a slower action, so it is used for longer-term control, but not for the quick relief of symptoms. Formoterol is a long-acting airway opener that is also quick-acting, so it can be used both for the immediate relief of symptoms and for longer-term control. Source: Ginasthma. Link: https://ginasthma.org/about-us/faqs/. Field: Lung Disease. Disease: Asthma </s>