Zerotuss XP Drop is a multi-ingredient expectorant and bronchodilator formulation containing Ambroxol (7.5 mg/ml), Levosalbutamol (0.25 mg/ml), and Guaifenesin (12.5 mg/ml). Ambroxol acts as a mucolytic agent, facilitating the breakdown and clearance of mucus from the respiratory tract, thereby improving airway patency. Levosalbutamol, a selective β2-adrenergic receptor agonist, provides bronchodilation by relaxing smooth muscles of the bronchial airways, resulting in relief from bronchospasm and improved airflow. Guaifenesin serves as an expectorant, promoting the thinning and loosening of mucus, which aids in productive coughing and effective mucus clearance. This combination is indicated for the symptomatic treatment of respiratory conditions characterized by excessive or thickened mucus production and bronchoconstriction, such as acute and chronic bronchitis, asthma exacerbations, and other obstructive airway diseases. Zerotuss XP Drop is administered orally, with dosage individualized according to patient age and severity of symptoms. Caution is advised in patients with hypersensitivity to any component, cardiovascular disorders, or hyperthyroidism. The product should be used under medical supervision, and patients are advised to adhere strictly to prescribed dosages to minimize adverse effects such as tachycardia, tremors, or gastrointestinal disturbances.