Eucalyptus Leaf
Also known as- Eucalyptus globules, Blue Gum, Blue Mallee, Blue Mallee Oil, Eucalypti Folium, Eucalyptus blatter, Eucalyptus bicostata, Eucalyptus fructicetorum, Eucalyptus leaf, Eucalyptus odorata, Eucalyptus oil, Eucalyptus polybractea, Eucalyptus smithii, Fever Tree, Fieberbaumblatter, Gully Gum, Gully Gum Oil, Gum Tree, Red Gum, Stringy Bark Tree, Sugandhapatra, Tailapatra, Tasmanian Blue Gum.
Introduction
The eucalyptus is an evergreen tree native to Australia but naturalized to California and the Mediterranean countries. Its leathery blue-green leaves are studded with glands containing a fragrant, volatile oil. There are many species of eucalyptus trees, but the most pleasant-smelling oil is produced by Eucalyptus globulus.
In the early nineteenth century, the crew of an Australian freighter developed intractable fevers they were able to cure with eucalyptus tree. Eucalyptus became well known in Europe as the Australian fever tree. American physicians used eucalyptus oil to sterilize surgical instruments and incisions, and also as a steam inhalation for asthma, bronchitis, colds and flu, emphysema, and whooping cough.
Constituents
The major volatile oil in eucalyptus leaf is eucalyptol, also known as 1,8-cineol. This compound is found in many other herbs in concentrations of 1 to 5%, but makes up about 70% of eucalyptus oil.
Parts Used
The leaf, its volatile oils released by steam.
Typical Preparations
Facial or hydro-steams, aromatherapy, and teas. Some uses may include encapsulation or extracts, however we have found these to be rare.
Summary
Eucalyptus oil acts on nerve receptors in the mucosa of the nose and sinuses in a way that causes release of mucus. In laboratory studies, eucalyptol (the main essential oil in the herb) is antibacterial against several strains of Streptococcus, the organism that causes strep throat. A combination of eucalyptus and mint may help relieve snoring.
Precautions
Never take eucalyptus oil internally. For safety, use eucalyptus leaf teas and steams rather than the oil. Excessive use may cause gastro-intestinal upset.
