1. Guidelines on the Safety of Plant-based Food Supplements and Consumer Interest in those Supplements;Council of Europe,2005
2. EFSA, 2004a. Discussion paper on Botanicals and botanical preparations widely used as food supplements and related products: coherent and comprehensive risk assessment and consumer information approaches. Scientific Committee of the European Food Safety Authority, Brussel, pp. 1–6. http://www.efsa.eu.int/science/sc_commitee/sc_documents/616/scdoc_advice03_botanicals_en1.pdf.
3. EFSA, 2004b. Opinion of the Scientific Panel on Food Additives, Flavourings, Processing Aids and Materials in Contacts with Food (AFC) on a Request from the Commission Related to Coumarin. Question number EFSA-Q-2003-EFSA Journal 104, 1–36. http://www.efsa.europa.eu/EFSA/Scientific_Opinion/afc_opinion26_ej104_coumarin_en1,3.pdf.
4. EFSA, 2005. Opinion of the scientific committee on a request from EFSA related to a harmonised approach for risk assessment of substances which are both genotoxic and carcinogenic. http://www. efsa.eu.int/science/sc_commitee/sc_opinions/1201_en.html.
5. EFSA, 2007. Safety assessment of botanicals and botanical preparations intended for use as food supplements. Draft guidance document of the scientific committee. Intermediate document adopted for public consultation on 19 November, 2007. http://www.efsa.europa.eu/EFSA/DocumentSet/sc_guidance_bota_public_consultation,0.pdf.