Will I be able to drive if I am taking medical cannabis?

There are rules in Ontario regarding cannabis use and driving and they can be found here.

There are certain limits of THC that are permitted. There is no concern with CBD as CBD does not provide impairing effects on driving. 

Most protocols at our clinic do not utilize THC during the day; therefore, you will be able to drive in most circumstances. If THC is used during the day for your treatment protocol, then discuss the implications on driving with the physician.