Additional informationHorseradish contains pungent compounds, called mustard oils, which are thought to be the constituents which give it the traditionally recognised decongestant effect. Horseradish has been used to help clear the respiratory passages. Garlic has traditionally been used for the relief of hayfever, coughs, colds, flu and rhinitis. Garlic contains sulphur compounds which are responsible for many of the beneficial Actions of garlic. Fenugreek acts as a demulcent which helps to soothe inflamed mucous membranes.Vitamin C is important in immunity as it is involved in the function of white blood cells and antibodies. It is therefore beneficial in dealing with infections, such as colds.,