Hyssop has an interesting range of uses which are largely attributable to the anti-spasmodic action of the volatile oil. It is used in coughs, bronchitis and chronic catarrh. Its diaphoretic properties explain its use in the common cold. As a nervine it may be used in anxiety states, hysteria and petit mal (a form of epilepsy). The New Holistic Herbal by David Hoffmann Pg. 207