1
Veitch NC, Smith M, Baxter IA. Herbal medicines. 4th ed. London: Pharmaceutical Press 2013.
2
Edwards SE. Phytopharmacy: An Evidence-Based Guide to Herbal Medical Products.
3
European Scientific Cooperative on Phytotherapy. E/S/C/O/P monographs: the scientific foundation for herbal medicinal products. 2nd ed., completely rev. and expanded. Exeter ; Stuttgart: E/S/C/O/P 1999.
4
Heinrich M. Fundamentals of pharmacognosy and phytotherapy. 2nd ed. Edinburgh: Churchill Livingstone/Elsevier 2012.
5
Stockley’s herbal medicines interactions: a guide to the interactions of herbal medicines. 2nd ed. London: Pharmaceutical Press 2013.
6
Heinrich M. Quality and safety of herbal medical products: regulation and the need for quality assurance along the value chains. British Journal of Clinical Pharmacology. 2015;80:62–6. doi: 10.1111/bcp.12586
7
Prance GT, Nesbitt M. The cultural history of plants. New York: Routledge 2005.
8
Karsch-Völk M, Barrett B, Kiefer D, et al. Echinacea for preventing and treating the common cold. Cochrane Database of Systematic Reviews. Chichester, UK: John Wiley & Sons, Ltd 1996.
9
Lockwood B, Rapport L. Nutraceuticals: a guide for healthcare professionals. Second edition. London: Pharmaceutical Press 2007.
10
Kayne SB. Complementary and alternative medicine. London: Pharmaceutical Press 2009.
11
Wichtl M, Brinckmann J, Lindenmaier MP. Herbal drugs and phytopharmaceuticals: a handbook for practice on a scientific basis. 3rd ed. Stuttgart ; Boca Raton: Medpharm 2004.
12
Williamson EM. Major herbs of Ayurveda. London: Churchill Livingstone 2002.
13
Stockley’s herbal medicines interactions: a guide to the interactions of herbal medicines. 2nd ed. London: Pharmaceutical Press 2013.
14
Witt CM. Clinical research on traditional drugs and food items—the potential of comparative effectiveness research for interdisciplinary research. Journal of Ethnopharmacology. 2013;147:254–8. doi: 10.1016/j.jep.2013.02.024
15
Medicines and Healthcare products Regulatory Agency - GOV.UK. https://www.gov.uk/government/organisations/medicines-and-healthcare-products-regulatory-agency
16
British Pharmacopoeia Commission, Stationery Office (Great Britain). British pharmacopoeia 2016. London: Stationery Office 2015.
17
MedicinesComplete. https://www.medicinescomplete.com/mc/