The blue gum eucalyptus (Eucalyptus globulus) is an evergreen tree of the Myrtaceae plant family. It can grow up to 80 m tall.
It is native to Australia and Tasmania, but approximately half of the world’s plantations are currently in Spain and Portugal. It is also grown in Russia and China.
Eucalyptus oil is obtained from the leaves and twigs of the tree by steam distillation.
It is a colourless to pale yellow liquid with a strong camphoraceous, woody aroma. Its main constituent is cineole, a powerful expectorant.
Eucalyptus has been used for many years for respiratory complaints, such as asthma, colds and coughs. It has also been used to aid fevers, aching joints and for skin problems. It is sometimes used to flavour cough lozenges.