Antispasmodic effects of the essential oil of , anethole, and estragole, on tracheal smooth muscle.

is a plant well adapted to the semi-arid climate of northeastern region of Brazil. The essential oil of (EOCz) has been described to have several pharmacologic properties, including effect on airflow resistance of respiratory system. For this reason, we investigated the hypothesis that EOCz and its major constituents, anethole and estragole, have antispasmodic activity on tracheal muscle.

Eucalyptol reduces airway hyperresponsiveness in rats following cigarette smoke-exposed.

Background: Cigarette smoke is the major cause of airway inflammatory disease, including airway hyperresponsiveness. Eucalyptol (EUC), also named 1.8-cineole, is a monoterpenoid found in essential oil of medicinal plants, showing several biological effects.