with plants or plant-derived formulations (Acun˜a et al., 2009).
There has been a resurgence of interest in herbal medicines in
various countries as alternative sources of drugs for often intractable
diseases (Phillipson and Anderson, 1989). These natural
products have been one of the most successful sources for the
discovery of new therapeutic agents as alternative sources of
drugs to treat inflammatory diseases (Harvey, 2000).