Patent ID: 7090871

Claim:
A composition, comprising: a therapeutically effective amount of petasites extract prepared by a) Production of a petasites crude extract by extraction of petasin-containing plant parts with supercritical CO 2 , ethylene or ethane in the pressure range from 8–30 MPa; b) Reduction of the water content of the crude extract to less than 1 wt. %; c) Shaking of the crude extract; d) Washing with water and reduction of the water content of the extract again below 1 wt. %; e) Drying of the extract; the extract being without hepatotoxic, carcinogenic, cytostatic and/or mutagenic effect derived from plants of the genus Petasites, whereby the petasites extract is free of detectable levels of pyrrolizidine alkaloids and is admixed with another pharmaceutically and/or physiologically active substance selected from the group consisting of at least one of magnesium, antiphlogistics, analgesics, trace elements, secretolytic or secretomotor agents, bronchospasmolytic, vitamins and mixtures thereof.