Eucalyptus is originated in Australia, particularly in the province of Tasmania, and was quickly planted in the subtropical regions of Asia and the Mediterranean basin.
Many countries quickly integrated the medicinal uses of eucalyptus leaves in their pharmacopoeia such as China, India, Sri Lanka, South Africa, as well as several European countries.
Its essential oil is obtained by hydrodistillation of fresh leaves.
There are more than 800 different species of eucalyptus.
The most sought after by the pharmaceutical industry is eucalyptus globulus because of its high eucalyptol content.
Finally, it is the variety used in many pharmaceutical specialties for its multiple virtues on the respiratory tree.