Cannabis from the Chemist. As the Government eases the law on cannabis possession, doctors have been assessing its medical properties. Steve Bradshaw reports on why cannabis extract might soon be available to combat MS, rheumatism, arthritis and, perhaps, many other conditions. Producer David Wickham (S) (W) Rptd with sign language on Wednesday at 12.25am www.bbc.co.uk/panorama NOTE: as Panorama is likely to react to news, its subject matter may change