Neofylin Cough Syrup is used for Cough relief, Common cold, Allergy, Hay fever, Watery eyes, Itchy throat/skin, Anaphylactic shock, Rhinitis, Urticaria, Patients with metabolic alkalosis and other conditions. Neofylin Cough Syrup may also be used for purposes not listed in this medication guide. Neofylin Cough Syrup contains Ammonium Chloride, Chlorpheniramine Maleate, Citric Acid and Sodium Citrate as active ingredients. Neofylin Cough Syrup works by blocking H1-receptor sites on tissues; increasing the excretion of extracellular electrolytes and water out of the body; regulating the intake of sodium and potassium; possessing the calcium chelating ability; lowering the coagulation factor activity; exhibiting the antioxidant action.