Hippocrates and Dioscorides both recommended this plant for respiratory complaints. Hyssop is considered stimulant, stomachic, a strong expectorant, antispasmodic, diaphoretic, carminative, nervine and pectoral. Useful in chronic coughs, pleurisy, tight-chestedness, respiratory catarrh, sore throat, common cold and chronic bronchitis and also in hysteria, colic, uterine affections and indurations of the liver and spleen.

Hyssop appears to encourage the production of more liquid mucus, and at the same time gently stimulates expectoration. This combined action clears thick and congested phlegm. As a sedative, hyssop is a useful remedy against asthma in both children and adults, especially when the condition is exacerbated by mucus congestion.

Useful in following diseases: