ABSTRACT
Although Viscum album extracts (VA-E) are well tolerated in general, there are some reports describing side effects during therapy. This chapter reviews these reports (Table 1); unfortunately most of these reports provide very few data to characterise the kind of mechanism. Added in this review are own data on patients with supposed adverse effects gained during a period of about 6 years. These immunological examinations were pursued in co-operation with a manufacturer of aqueous mistletoe extracts (Helixor Heilmittel, Rosenfeld, Germany).
