Eucalyptus oil is the generic name for distilled oil from the leaf of Eucalyptus, a genus of the plant family Myrtaceae cultivated worldwide. Eucalyptus oil has a history of wide application, as a pharmaceutical, antiseptic, repellent, flavouring, fragrance and industrial uses. The leaves of selected Eucalyptus species are steam distilled to extract eucalyptus oil.
- Antibacterial properties — A study published in Clinical Microbiology and Infection found that eucalyptus oil may have antibacterial action on pathogenic bacteria in the upper respiratory tract.
- Pain relief — Research indicates the analgesic properties of this essential oil. A study in the American Journal of Physical Medicine and Rehabilitation applied Eucalyptamint on the anterior forearm skin of 10 subjects, and found that Eucalyptamint "produced significant physiologic responses that may be beneficial for pain relief and/or useful to athletes as a passive form of warm-up."
- Dental health — This oil exhibits antibacterial activity against cariogenic (tooth decay-causing) and periodontopathic bacteria.
- Stimulating immune system response — According to a study published in BMC Immunology, eucalyptus oil extract is said to implement the innate cell-mediated immune response.
One very important reason why many individuals use eucalyptus oil is its ability to address mental exhaustion through creating a cooling and refreshing effect. As a stimulant, it helps eradicate exhaustion and mental sluggishness, and rejuvenates "the spirits of the sick."10
Apart from mental exhaustion, this essential oil is commonly used for stimulating mental activity and increasing blood flow to the brain. It is not uncommon for eucalyptus essential oil to be then employed in classrooms as a form of aromatherapy.