Xtos-D Syrup Sugar Free is a combination oral medication formulated to provide symptomatic relief from cough and nasal congestion associated with upper respiratory tract infections. Each 5 ml contains Phenylephrine 5 mg, a selective alpha-1 adrenergic receptor agonist that acts as a decongestant by constricting dilated blood vessels in the nasal mucosa, thereby reducing swelling and nasal congestion. Chlorpheniramine Maleate 2 mg, an antihistamine with anticholinergic properties, helps alleviate allergic symptoms such as runny nose, sneezing, and watery eyes by blocking H1 histamine receptors. Dextromethorphan Hydrobromide 10 mg serves as a centrally acting antitussive agent that suppresses the cough reflex by acting on the cough center in the medulla, providing relief from dry, irritating cough. The sugar-free formulation makes it suitable for diabetic patients and those requiring sugar restriction. Xtos-D Syrup is indicated for temporary relief of cough, nasal congestion, and allergy symptoms. It should be used with caution in patients with hypertension, cardiac disorders, or glaucoma. Adverse effects may include drowsiness, dizziness, dry mouth, or gastrointestinal discomfort. Use under medical supervision is advised to ensure appropriate dosing and to avoid potential drug interactions.