John Stewart is the co-founder of Emblem, which is legally licensed by the Canadian government to grow and sell cannabis for medical purposes. According to Stewart, his former company, Purdue Pharma, actually did some research into the medical use of cannabis. This is what sparked his interest in the plant; although the company decided not to pursue the medicine, Stewart did.
The move is an ironic one; research has shown medical cannabis to be directly related to a large decrease in prescription drug use. A study released last year by the National Bureau of Economic Research found that in states that in U.S. states that have legalized medical cannabis, prescription painkiller deaths are down by as much as 50%.
For information about Emblem can be found on their website by clicking here.