Janbery Syrup Sugar Free is a multi-symptom relief formulation containing Phenylephrine (5mg/5ml), Chlorpheniramine Maleate (2mg/5ml), and Dextromethorphan Hydrobromide (10mg/5ml). Phenylephrine acts as a selective alpha-1 adrenergic receptor agonist, providing effective nasal decongestion by vasoconstriction of nasal mucosa blood vessels. Chlorpheniramine Maleate is a first-generation antihistamine that alleviates allergic symptoms such as sneezing, runny nose, and watery eyes by competitively inhibiting histamine H1 receptors. Dextromethorphan Hydrobromide serves as a centrally acting antitussive agent, suppressing the cough reflex via its action on the cough center in the medulla oblongata without causing significant respiratory depression. This sugar-free syrup formulation is suitable for patients requiring glycemic control or those with sugar intolerance. Janbery Syrup Sugar Free is indicated for the symptomatic relief of upper respiratory tract conditions including common cold, allergic rhinitis, and cough associated with bronchitis. It should be used with caution in patients with hypertension, glaucoma, or thyroid disorders due to the presence of Phenylephrine. The product is intended for oral administration and dosage should be adjusted according to age and clinical response. Consultation with a healthcare professional is recommended prior to use to ensure safety and efficacy.