“…Carica papaya, Chelone glabra, Corallium rubrum, Daucus carota, Epifagus virginiana, Lamiastrum galeobolon, Mangifera indica, Nicotiana tabacum and Rumex acetosella (traditional texts) , Cannabis sativa (contemporary) and Antrodia cinnamomea and compound prescriptions of Chinese herbal medicines (case studies) were all identified to be administered specifically to retard cancer growth. While anti-carcinogenic activity of some of these listed herbs has been supported by pre-clinical studies with use of immortalized cancer cell lines [ [36] , [37] , [38] , [39] , [40] , [41] , [42] , [43] , [44] ], it is important to note that traditional and contemporary clinical use may not be aligned due to incorrect botanical identification or discovery of the herbs' toxicity, thereby altering the preparation and dosage of these herbal extracts over time. For example, traditional evidence shows that Conium maculatum (poison hemlock) ‘retards distress in glandular enlargements in scrofulous or cancerous cachexia’ [ 19 ] in doses of two to six minims of its fluid extract, but it is a well-known as a highly poisonous and deadly herb when ingested due to its toxic alkaloids affecting nerve impulse transmission to muscles causing respiratory failure [ 45 ].…”