Eucalyptus is a fast-growing evergreen tree native to Australia. As an ingredient in many OTC products, it is used to reduce symptoms of coughs, colds, and congestion. It also features in creams and ointments aimed at relieving muscle and joint pain.

The oil that comes from the eucalyptus tree is used as an antiseptic, a perfume, as an ingredient in cosmetics, as a flavoring, in dental preparations, and in industrial solvents.

Chinese, Indian Ayurvedic, Greek, and other European styles of medicine have incorporated it into the treatment of a range of conditions for thousands of years.

There are over 400 different species of eucalyptus. Eucalyptus globulus, also known as Blue Gum, is the main source of eucalyptus oil used globally.

Leaves are steam distilled to extract the oil, which is a colorless liquid with a strong, sweet, woody scent. It contains 1,8-cineole, also known as eucalyptol.

The leaves also…