Beta agonist / corticosteroid combinations are used to treat asthma and chronic obstructive pulmonary disease (COPD). These medications work by combining a beta-agonist, which helps to relax the muscles around your airways, and a corticosteroid, which reduces inflammation in your lungs. This combination makes it easier for you to breathe. These medications are typically available as inhalers. Examples include fluticasone / salmeterol (Advair, Airduo), budesonide / formoterol (Symbicort), and fluticasone furoate / vilanterol (Breo Ellipta). You can use these inhalers to manage your symptoms and improve your breathing.