Dr Oscar D’Agnone, MD, MRCPsych is a consultant psychiatrist based in London with more than 30 years of experience working in addictions and mental health. Dr D’Agnone is author of many papers and books on addictions, and is published widely in the professional medical press. He has been Honorary Professor of the Faculty of Medical and Human Sciences, Institute of Brain Behaviour and Mental Health, University of Manchester until December 2019. Over the last years he has been a senior member of an international advisory board of experts developing clinical guidelines and protocols for the use of sustained release buprenorphine formulations and medicinal cannabis. Dr D’Agnone is medical director of The OAD Clinic, London, specialized in addictions and opioid analgesic dependence.