GW Pharmaceuticals plc is a United Kingdom-based company. The Company is engaged in the research, development and commercialization of a range of cannabinoid prescription medicines to meet patient needs in a range of medical conditions. The Company is developing a portfolio of cannabinoid medicines, of which the main product is Sativex, an oromucosal spray for the treatment of Multiple Sclerosis (MS) symptoms, cancer pain and neuropathic pain. The Company operates in three segments: Sativex Commercial, Sativex Research and Development and Pipeline Research and Development. The Company�s wholly owned subsidiaries include GW Pharma Limited, G-Pharm Limited, Cannabinoid Research Institute Limited, Guernsey Pharmaceuticals Limited and GWP Trustee Company Limited.