Bitter Orange peel (Aurantii pericarpium)

Published October 15, 1987; Revised March 13, 1990.
List of German Commission E Monographs (Phytotherapy)


Name of Drug

Aurantii pericarpium, bitter orange peel.

Composition of Drug

Bitter orange peel consists of the dried outer peel of ripe fruits of Citrus aurantium L. subspecies aurantium (synonym C. aurantium L. subspecies amara Engler) [Fam. Rutaceae], freed from the white pulp layer, as well as its preparations in effective dosage.

The drug contains essential oil and bitter principles.


Loss of appetite, dyspeptic ailments.


None known.

Side Effects

Photosensitization is possible, especially in fair-skinned individuals.

Interactions with Other Drugs

None known.


Unless otherwise prescribed:

Daily dosage:

Drug: 4 - 6 g; Tincture (according to DAB 7): 2 - 3 g; Extract (according to Erg. B. 6): 1 - 2 g. Mode of Administration Comminuted drug for teas, other bitter-tasting galenical preparations for oral application.