The volatile oil in Aniseed provides the basis for its internal use to ease griping, intestinal colic and flatulence. It also has a marked expectorant and antispasmodic action and may be used in bronchitis, in tracheitis where there is persistent irritable coughing, and in whooping cough. Externally, the oil may be used in an ointment base for the treatment of scabies. The oil by itself will help in the control of lice. The New Holistic Herbal, by David Hoffmann Pg. 176