Concern for a solid and credible scientific basis in medical herbalism and for professional standards in practice led Hein Zeylstra to establish a professional body appropriately moderated. Today, it continues to set the standard worldwide as the body for
Scientists isolated morphine from opium, leading to the belief (in the West at least) that a single, non-living compound in a plant was responsible for its healing properties. This helped create the biomedical model of pharmacotherapy, where plants are se