Xpera-DC Cough Syrup is a combination pharmaceutical formulation containing Phenylephrine (5mg/5ml), Chlorpheniramine Maleate (2mg/5ml), and Dextromethorphan Hydrobromide (10mg/5ml). This multi-ingredient syrup is indicated for the symptomatic relief of cough associated with upper respiratory tract infections, allergic rhinitis, and common cold. Phenylephrine acts as a selective alpha-1 adrenergic receptor agonist, providing effective nasal decongestion by vasoconstriction of nasal mucosal blood vessels. Chlorpheniramine Maleate, a first-generation antihistamine, exerts antiallergic and anticholinergic effects, reducing histamine-mediated symptoms such as sneezing, runny nose, and watery eyes. Dextromethorphan Hydrobromide serves as a centrally acting antitussive agent, suppressing the cough reflex by acting on the medullary cough center without causing significant sedation or addiction potential. Xpera-DC Cough Syrup is suitable for adults and children above a specified age, with dosing adjusted accordingly. It is important to adhere to recommended dosages and consult a healthcare professional before use, especially in patients with hypertension, glaucoma, or those taking monoamine oxidase inhibitors. This formulation provides a comprehensive approach to managing cough and associated nasal symptoms, improving patient comfort and quality of life during respiratory illnesses.