Opinion: Canada needs a national post-market drug surveillance system

If you take prescription medications, what conditions do you take them for? Are they working? Have you experienced any negative side-effects?
Answers to these critical health questions aren’t well documented for most Canadians. Yet the answers would provide the crucial information needed to ensure our medications are safe and worth taking.
Before prescription drugs are approved in Canada, they are tested under controlled conditions on relatively small numbers of patients with selective cha