Andrew Chevallier FNIMH, MCIPP is a medical herbalist, healer, and author of international bestseller Encyclopedia of Herbal Medicine (DK, 1996, 2000, 2016). He is a former president of the National Institute of Medical Herbalists, co-founded the BSc (hons) Herbal Medicine course at Middlesex University, UK, and previously worked in an NHS-funded complementary health clinic. Andrew lectures at the Plant Medicine School in Ireland and is a member of the editorial board of the Journal of Herbal Medicine (UK).