Published July 27, 1990.
List of German Commission E Monographs (Phytotherapy)
Symphyti herba, comfrey herb.
Symphyti folium, comfrey leaf.
Comfrey herb consists of the fresh or dried above-ground parts of Symphytum officinale L. [Fam. Boraginaceae], as well as their preparations in effective dosage.
Comfrey leaf consists of the fresh or dried leaf of S. officinale L., as well as its preparations in effective dosage.
The drug contains allantoin and rosmarinic acid.
Bruises, sprains. Contraindications None known.
Note: Application should only occur on intact skin. During pregnancy use only after consultation with a physician.
Unless otherwise prescribed:
Ointments and other preparations for external application with 5 - 20 percent dried drug; equivalent preparations. The daily applied dosage should not exceed 100 µg (mcg) of pyrrolizidine alkaloids with 1,2-unsaturated necine structure, including their N-oxides.
Comminuted herb and other galenical preparations for external use.
Not more than 4 - 6 weeks per year.