Preparations from mistletoe extracts are most frequently used in the treatment of cancer patients in German-speaking countries.[
46] Commercially available extracts are marketed under a variety of brand names, including Iscador (see explanation of suffixes below), Eurixor, Helixor, Isorel, Iscucin, Plenosol, and abnobaVISCUM. Some extracts are marketed under more than one name. Iscador, Isorel, and Plenosol are also sold as Iscar, Vysorel, and Lektinol, respectively. All of these products are prepared from
Viscum album (Loranthaceae) (
Viscum album L. or European mistletoe). They are not sold as a drug in the United States. Eurixor, Isorel, and Vysorel are no longer commercially available.
In addition to European mistletoe, extracts from a type of Korean mistletoe (
Viscum album var.
coloratum [Kom.] Ohwi) have demonstrated
in vitro and
in vivocytotoxicity in laboratory studies.[
47-
51]