Medicinal cannabis has been available in Canada for years. But unlike herbal supplements and vitamins, there's very little chemical analysis being provided to consumers. Dr. Sean Myles is an Associate Professor with the Faculty of Agriculture at Dalhousie University. They teamed up with another research facility in the Netherlands to look into the issue. As they note, unlike other commercial crops, the naming conventions are not scientific and they decided to examine the different strains and their chemical makeup. And they found you can't rely on labels to inform you on what you're consuming.