Negundo Chastetree Oil is the volatile oil obtained by steam distillation from the fresh leaf of Vitex negundo L. var. cannabifolia (Sieb. et Zucc.) Hand. -Mazz. (Fam. Verbenaceae).

Action: To promote expectoration, and relieve cough and asthma.

Indications: Chronic bronchitis.

Usage: Three times a day.