I would like to add to David Nutt’s piece about medicinal cannabis (
The Pharmaceutical Journal 2014;293:560). Cannabidiol and d9-tetrahydrocannabinol were discovered by scientists in Israel and medicinal cannabis is now widely used there for a number of conditions. It is grown in secret locations under strict security and is prescribed by doctors registered to do so. There is now a facility to grow medicinal cannabis in Toronto, Canada, using Israeli expertise.