Dextromethorphan HBr (10 mg) Antitussive (Cough Suppressant) Suppresses dry, non-productive cough Chlorpheniramine Maleate (2 mg) First-Generation Antihistamine (H1 Blocker) Reduces allergy symptoms (sneezing, runny nose) Phenylephrine HCl (5 mg) Sympathomimetic / Nasal Decongestant Constricts nasal blood vessels to reduce congestion