Budesonide (200 mcg) inhaler is an inhaled corticosteroid (ICS) used for long-term control and prevention of inflammatory airway diseases. It works by reducing inflammation, swelling, and mucus production in the bronchial airways, thereby improving airflow and preventing asthma exacerbations. As a maintenance therapy, Budesonide helps reduce the frequency and severity of wheezing, breathlessness, chest tightness, and coughing. Regular use significantly improves lung function and decreases the need for rescue bronchodilators. It is not intended for immediate relief of acute bronchospasm but plays a crucial role in chronic asthma management and other inflammatory respiratory conditions.