Beta agonist / anticholinergics / corticosteroid combinations are used to treat chronic obstructive pulmonary disease (COPD) and asthma. They work by relaxing the muscles around your airways and reducing inflammation, making it easier for you to breathe. These combinations are typically available as inhalers, which you use by breathing in the medication. Examples include fluticasone / umeclidinium / vilanterol (Trelegy Ellipta) and budesonide / glycopyrrolate / formoterol (Breztri Aerosphere). These inhalers help manage your symptoms and improve your breathing.