What is a known benefit of eucalyptus oil?

Eucalyptus oil is widely recognized for its expectorant properties, which makes it particularly beneficial in respiratory therapy. This oil helps to loosen and clear mucus from the airways, making it easier to breathe. Its chemical components, such as eucalyptol, act on the mucous membranes, promoting the expulsion of phlegm and alleviating symptoms associated with respiratory conditions like colds, coughs, and bronchitis.

While eucalyptus oil may have some impact on muscle relaxation, digestive improvement, or circulation stimulation, its most notable and well-documented use is its effectiveness as an expectorant. This is why it stands out as the most appropriate and correct answer regarding the well-established benefits of eucalyptus oil in aromatherapy and holistic practices.