Respiratory System

Pharmacology of Levocetirizine

Introduction Levocetirizine is a widely used second-generation H1-antihistamine, often prescribed for the management of allergic rhinitis, urticaria, and other allergic conditions. It…

Pharmacotherapy of Bronchial Asthma

Introduction Asthma is a chronic inflammatory disease of the airways, characterized by bronchial hyperresponsiveness, variable airflow obstruction, and repeated episodes of wheezing, coughing, chest tightness, and dyspnea. This condition…

Pharmacotherapy of Cough

Introduction Cough is a protective reflex integral to clearing the airways of irritants, secretions, and foreign matter. Without a properly functioning cough mechanism, the…