Emzolyn Expectorant is a syrup by Emzor Pharmaceutical designed to relieve coughs, chest congestion, and mucus buildup. It contains Diphenhydramine, Ammonium Chloride, Sodium Citrate, and Menthol, which work together to loosen mucus, soothe the throat, and reduce congestion. Suitable for adults and children (with medical guidance), it may cause drowsiness and should be used as directed.