There is conflicting research about its efficacy as an anticancer agent, though it does contain a component that has antioxidant properties (Source: Society for Experimental Biology and Medicine, January 1995, pages 6–12; and www.healthwell.com/healthnotes/). When ingested, it may cause liver toxicity (Sources: Molecular and Cellular Biochemistry, June 1999, pages 157–161; Archives of Internal Medicine, April 1997, pages 913–919; and www.quackwatch.com/01QuackeryRelatedTopics/OTA/ota04.html). Topically it can have antimicrobial properties (Source: Journal of Ethnopharmacology, June 1996, pages 175–177).