Duro-Tuss Lingering Cough Liquid + Immune Support is formulated to help relieve a lingering cough associated with the common cold. It contains marshmallow, traditionally used in Western herbal medicine to soothe an irritated throat and an associated dry cough, along with zinc to support immune health. This non-drowsy formula works in three ways to help calm a nagging cough that may persist for up to two weeks after a cold. With a pleasant blackberry and vanilla flavour, it contains natural actives and is free from added sugars, lactose, and artificial colours. Buy Duro-Tuss Lingering Cough Liquid + Immune Support 200mL at Health Supplements Australia for cough relief & immune support. Shop now!