Information indicated that comfrey is mutagenic in rat lung and that mutagenicity of comfrey in rat lung benefits in the genotoxicity induced by PA present from the plant (Mei & Chen, 2007). The effects of dietary comfrey on drug metabolizing enzymes in rats have also been examined. Dietary comfrey was https://comfrey-medicinal-propert42703.homewikia.com/10658230/an_unbiased_view_of_comfrey_medicinal_properties