Horseradish is an old household remedy useful wherever a stimulating herb is called for. It can be used in influenza and fevers as a rough equivalent to Cayenne Pepper. It stimulates the digestive process whilst easing wind and griping pains. It has been used in cases of urinary infection. Externally it has a stimulating action similar to Mustard Seed. It can be used for rheumatism and as a poultice in bronchitis. The New Holistic Herbal by David Hoffmann Pg. 206