Ingredients NyQuil Active Ingredients: Acetaminophen - 325 mg (Pain reliever/fever reducer), Dextromethorphan HBr - 10 mg (Cough suppressant), Doxylamine Succinate - 6.25 mg (Antihistamine), Phenylephrine HCl (5 mg) (Nasal decongestant) Inactive Ingre...