I'll take the question in my role as a physician rather than as chair of the PMPRB, because I think your objective is a very valid one and good one, and it's very current.
There are all kinds of difficulties in implementing a very good mandatory reporting system for adverse reactions. I think at the moment, in terms of physician input, you'd need to have discussions with the medical establishment, because any type of reporting is burdensome. If you have a busy family practitioner and a person comes in and says “I have a rash from taking this particular pill”, your natural instinct is just to say, well, stop taking the pill and I'll give you something else, when in fact that particular rash may be part of bigger picture. So there's no incentive really to report adverse reactions, unless they are catastrophic, surprising, or unexpected according to what the product information brochure says. If you look at any product information brochure, you're going to see every possible adverse reaction listed there. Most physicians just skim over them; you only look at the most important ones.
You'd have to have some kind of mandatory regime to oblige the reporting of adverse reactions, in my opinion. In hospitals it would easier to acquire, but out in the community it would be difficult.