oil of eucalyptus
Definition: volatile oil from the fresh leaves of Eucalyptus globulus (family Myrtaceae) and some other species of Eucalyptus; native to Australia; pungent oil with a spicy, cooling taste. Has been used as an aromatic in inhalants, as an expectorant, anthelmintic, and local antiseptic.
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Examples: glitazone, GI cocktail, etc.