the materials that will provide us with a range of beneficial effects. >> designer cannabis plants are then reduced to a whole plant extract, and that's crucial according to the grand daddy of all marijuana research, israel's dr. raphael mashula. >> when they've tried to make drugs using certain compounds from marijuana, it's met with limited success. why is it when you take certain compounds out of the marijuana and try to make a drug, it doesn't seem to work as well? >> well, one of the reasons possibly is because the thc works better when cannabidiol is there. so if you have both, it works better. >> he calls it the entourage effect, and that's what gw is doing. every extract will have all the plant's chemicals in it. the extract is then packaged as an approved prescription spray. in order to increase the chances of getting that approval, every step from growing to harvesting to manufacturing is all carefully controlled, regulated