It is important for serious adverse drug reactions (ADRs) to be reported to government regulators of the pharmaceutical industry.

Health Canada defines a serious ADR as a noxious and unintended response to a drug that occurs at any dose and that:

  • Requires in-patient hospitalization or prolongation of existing hospitalization;
  • Causes congenital malformation;
  • Results in persistent or significant disability or incapacity;
  • Is life-threatening; or
  • Results in death.

Here are the ADR reporting websites for a few countries: