Thank you very much.
I'm the executive director of the Canadian Drug Policy Coalition based at Simon Fraser University in Vancouver.
Thank you for inviting me to speak to the committee today on such a critical issue for Canadians.
Our organization has membership of about 70 organizations and 3,000 individuals working to improve the state of Canada's approach to substance use and drug policy.
It's clear that there's a problem with the use of prescription drugs and opioid dependence, overdose, and other related problems in Canada, and we're delighted that this committee may be taking a serious look at the issue in the near future. Canada is clearly lagging behind in developing a national strategy, and the urgency to do so is clearly laid out in numerous publications. In the coming weeks, the coalition will be presenting to the committee a comprehensive brief on overdose prevention and awareness, which will chart a way forward for levels of government and communities in Canada to maximize efforts to save lives and prevent what are, most often, preventable overdose deaths.
I will not go into great detail about regulatory fixes for the growing phenomenon of prescription drug use dependence and non-medical use of prescription drugs. Others who will be presenting to the panel have more expertise in this area than we do. I will, however, caution the committee that regulatory fixes may be a small part of the solution if a serious study is to be undertaken, which we think is clearly justified by the current situation, and that the committee should consider broadening the scope of its work to include an attempt to get at the underlying causes of this growth in non-medical use of opioids as well as immediate actions to stem the increasing number of lives lost to opioid overdose.
The challenge before us, with regard to prescription opioid use is, as one researcher in the U.S. states, “finding the optimal balance between the risks of over-prescribing which may lead to addiction, overdose, and diversion, and under-prescribing which may lead to underdeveloped treatment of pain.” Even in the U.S. where there is much better data on this phenomena, he says, “there is little evidence to guide good decision-making on finding this balance”. Suffice it to say we all know this is a complex problem.
Opioid use, dependence, and deaths from overdose have been with us for a long time. I'm a veteran of efforts in the Downtown Eastside of Vancouver to stem the rate of lives lost resulting from opioid use throughout the 1990s and into this century. Thousands of individuals lost their lives during this period in Vancouver and in British Columbia, and many others suffered serious health consequences as a result of opioid use.
The response to the Vancouver situation was slow, inadequate to meet the scale of the problems, and 20 years after the first epidemic of opioid overdose deaths in 1993, still very much a work in progress; hence my other warning about regulatory fixes to this problem. The complexity of the issue and the jurisdictional divides mean it will take significant time to come up with a solution that balances regulatory control with access to medicine for those suffering severe pain.
Our presentation will focus more on what we can do in the meantime to prevent people from suffering opioid overdose deaths while we work towards a multi-level and multi-sectoral approach to reducing the harm from this phenomena. The CCSA, Canadian Centre on Substance Abuse, document, “First Do No Harm: Responding to Canada’s Prescription Drug Crisis” is a good start and lays out a road map for the high-level, multi-sectoral, and interjurisdictional work that needs to take place in order to get a grip on this phenomenon.
Opioid overdose prevention and response, interventions that work at the community level, exist today and are becoming commonplace in some jurisdictions, most notably the U.S. Policy changes and concrete interventions that can be implemented in short order at all levels will improve safety and prevent loss of life from opioid use. I emphasize this again to stress the fact that regulatory fixes and more upstream efforts, by definition, will take time to discover and implement. In the meantime much can be done to minimize harm.
Our challenge with this issue is exacerbated by a significant lack of data at the national level, which is a problem identified by numerous studies, including the CCSA report. This past May we released a report called, “Getting To Tomorrow: A Report on Canadian Drug Policy”. After a year of working on this report, it was apparent that Canada is suffering from a lack of data on a number of issues related to this issue as well as to other drug policy-related issues.
Non-medical use of prescribed opioids is now the fourth most prevalent form of substance use in Canada, and there is evidence that prescribed opioids are the third-leading cause of harm behind alcohol and tobacco.
Canada and the U.S. lead all nations in prescription opioid consumption. This has resulted in an increase in problem opioid use and overdoses. Let me be clear, though, that before the increase in prescribing, opioid overdoses were a problem of epidemic proportions in the early 1990s in British Columbia.
In fact, drug overdose is associated with both the medical and non-medical use of prescription drugs. Overdoses specifically associated with prescription opioids have increased. On October 12, 2012, the B.C.-based Interior Health Authority released a warning that overdoses in the region from legally prescribed non-methadone opioid use were about twice the B.C. provincial rate. These overdoses were associated with the use of prescription opioids as prescribed, though most of these overdoses occurred among people who were prescribed other medications as well.
U.S. longitudinal studies have also noted the high risk of overdose when prescribed opioids are used with benzodiazepines and/or alcohol.
These events speak to the need for two interrelated opportunities for federal policy development: one, provision of leadership on the matter of prescribing practices; and two, taking a risk reduction or harm reduction approach to overdoses.
With respect to prescribing practices, given that Canada has one of the highest levels of prescribed opioid use in the world, it is important to acknowledge the role that prescribing practices have had in opioid use and accidental overdoses in Canada, especially in the last 10 to 15 years. In many communities, opioid-related deaths appear to be concentrated in areas where physicians prescribe opioids more frequently.
As a recent strategy on prescription drugs released by the CCSA notes, efforts need to be made to make physicians more aware of the risks of opioid use.
Physicians who prescribe opioids must ensure that patients and their families receive up-to-date information about the potential effects of these drugs, including the risks of overdose and dependency. As a routine part of their practice, physicians should help patients to identify and respond to overdose symptoms.
In several jurisdictions in the U.S., medical boards have recommended that naloxone be co-prescribed with opioids to anyone at risk of overdose. We urge provincial governments and appropriate professional colleges and associations to consider making similar recommendations to prescribers in their jurisdictions.
In adopting a risk reduction approach to opioid overdoses, it's important to recognize that the relationship between using opioids and overdose is not necessarily simple or causal. Many people use opioids without suffering ill effects. Use in and of itself does not lead to dependence or overdose.
Being clear on what increases the risk of overdose is critical. People are at a particularly higher risk of overdose under the following conditions: if they use opioids in combination with alcohol or other drugs; if they are initiating or tapering off opioid therapy; if they are coming off a period of low or non-use, such as being incarcerated; if they have difficulty accessing primary care; or if a prescription drug is delisted or suddenly made unavailable and they are forced by circumstance to seek out other resources for mitigating pain.
These risks apply to both medical and non-medical use of opioids. Overdose is also more common among people who are homeless, because of the health problems and lack of access to health care that can stem from the lack of safe and stable housing.
When the number of overdoses increases, often the first response is to attempt to control and contain the supply. Typically, these strategies call for prescription monitoring programs, drug take-back events, and limiting the doses of prescribed opioids, but none of these measures have been shown to be effective at reducing accidental overdose deaths.
There may be cases where limiting the supply of prescription opioids is an important component of a prevention strategy, but it is equally important to ensure that strategies to contain the negative effects of opioid use do not result in misdiagnosis of illness or ignoring the physical causes of pain.
In addition, strategies to address overdose sometimes fail to acknowledge the gender differences that characterize overdose events. Though men are more likely to experience overdose, overdose deaths due to prescription opioids among women have in recent years been increasing at a greater rate than among men, in part because of the increased prescribing of pain medications to women, often in conjunction with drugs like benzodiazepines.
Limiting supply results in displacement of the problem to an illicit market. In response to concerns about the non-medical use of prescription opioids, seven provinces removed OxyContin from provincial drug formularies in 2012. These changes were meant to suppress a widespread use of these drugs by limiting their supply, but as referenced in the United Nations Office on Drugs and Crime reports, if the use of one drug is controlled by reducing supply, suppliers and users may move on to another drug with similar psychoactive effects but of greater potency and purity.
As oxy products have been removed from many of the provincial and federal formularies, some people have switched to equally strong prescribed drugs or are seeking other illegal alternatives. Data and anecdotal evidence suggest that the non-medical use of prescription opioids has become more prevalent than heroin use. With the recent removal of OxyContin from many provincial drug formularies and the federal drug plan, illegal substitutes, such as heroin and fentanyl analogues, could be making a resurgence as cheap available alternatives to OxyContin.
An example of displacement can be found in B.C. In 2013 the B.C. Provincial Health Officer released an alert based on the B.C. Coroners Service's finding that there had been 23 deaths related to fentanyl.