Macbery DX Syrup Sugar Free is a pharmaceutical formulation containing Chlorpheniramine Maleate 4 mg and Dextromethorphan Hydrobromide 10 mg per dose, designed for the symptomatic relief of cough and allergic conditions. Chlorpheniramine Maleate is a first-generation antihistamine that competitively inhibits H1 histamine receptors, thereby reducing allergic manifestations such as rhinorrhea, sneezing, and nasal congestion. Dextromethorphan Hydrobromide acts centrally on the cough center in the medulla oblongata to suppress the cough reflex without causing significant sedation or respiratory depression. This combination is particularly effective in managing cough associated with upper respiratory tract infections and allergic rhinitis. The sugar-free formulation makes it suitable for diabetic patients and those requiring sugar-restricted diets. Macbery DX Syrup Sugar Free should be used according to the recommended dosage to minimize adverse effects, which may include drowsiness, dizziness, dry mouth, and gastrointestinal disturbances. Caution is advised in patients with a history of hypersensitivity to either component, as well as in those with chronic respiratory conditions. It is contraindicated in children under two years of age and should be used under medical supervision in pregnant or lactating women. This syrup offers a balanced approach to cough suppression and allergy symptom control, enhancing patient comfort and compliance.