Formoterol is a long-acting beta agonist (LABA) used in the treatment of asthma and chronic obstructive pulmonary disease (COPD). It works by relaxing the muscles in the airways, making it easier to breathe. Formoterol is typically used in combination with an inhaled corticosteroid to control and prevent symptoms of asthma or COPD. Research on formoterol focuses on its efficacy and safety in the treatment of these respiratory conditions, as well as its potential for use in other respiratory diseases. Studies also explore optimal dosages, administration methods, and potential side effects of formoterol therapy. Additionally, there is ongoing research into the long-term effects of formoterol treatment on lung function and overall health outcomes for patients with asthma or COPD.