Symbicort Inhaler is a combination medication used to treat asthma and COPD, containing budesonide and formoterol. The inhaler is used twice daily, and can improve lung function and reduce symptoms. While side effects include sore throat, cough, and headache, the medication is generally well-tolerated. Patients should be monitored for potential side effects and avoid using the inhaler during an acute attack, and use a rescue inhaler instead. Overall, Symbicort Inhaler is a promising option for patients and can lead to better symptom control and quality of life.