Skip header and navigation
CMA PolicyBase

Policies that advocate for the medical profession and Canadians


3 records – page 1 of 1.

Canada’s lower-risk cannabis use guidelines (LRCUG)

https://policybase.cma.ca/en/permalink/policy13726
Date
2017-05-26
Topics
Pharmaceuticals/ prescribing/ cannabis/ marijuana/ drugs
  1 document  
Policy Type
Policy endorsement
Date
2017-05-26
Topics
Pharmaceuticals/ prescribing/ cannabis/ marijuana/ drugs
Text
Canada’s Lower-Risk Cannabis Use Guidelines (LRCUG) Recommendations
Cannabis use has health risks best avoided by abstaining
Delay taking up cannabis use until later in life
Identify and choose lower-risk cannabis products
Don’t use synthetic cannabinoids
Avoid smoking burnt cannabis—choose safer ways of using
If you smoke cannabis, avoid harmful smoking practices
Limit and reduce how often you use cannabis
Don’t use and drive, or operate other machinery
Avoid cannabis use altogether if you are at risk for mental health problems or are pregnant
Avoid combining these risks Reference summary Fischer, B., Russell, C., Sabioni, P., van den Brink, W., Le Foll, B., Hall, W., Rehm, J. & Room, R. (2017). Lower-Risk Cannabis Use Guidelines (LRCUG): An evidence-based update. American Journal of Public Health, 107(8). DOI: 10.2105/AJPH.2017.303818. Endorsements summary The LRCUG have been endorsed by the following organizations: Council of Chief Medical Officers of Health (in principle) Acknowledgment The Lower-Risk Cannabis Use Guidelines (LRCUG) are an evidence-based intervention project by the Canadian Research Initiative in Substance Misuse (CRISM), funded by the Canadian Institutes of Health Research (CIHR). A longer evidence summary of the guidelines, aimed at health professionals, is available at camh.ca. Cannabis use is a personal choice, but it comes with risks to your health and well-being. Follow these recommendations to reduce your risks. Cannabis use is a personal choice, but it comes with risks to your health and well-being. Follow these recommendations to reduce your risks. Health risks of cannabis use There is strong scientific evidence that cannabis use is associated with a variety of health risks. The risks depend on your constitution, which kinds of cannabis products you use and how or how often you use them. Some of the main health risks are:
problems with thinking, memory or physical co-ordination
impaired perceptions or hallucinations
fatal and non-fatal injuries, including those from motor-vehicle accidents, due to impairment
mental health problems and cannabis dependence
chronic respiratory or lung problems
reproductive problems. Reducing health risks related to cannabis use Cannabis use has health risks best avoided by abstaining To avoid all risks, do not use cannabis. If you decide to use, you could experience immediate, as well as long-term risks to your health and well-being. Any time you choose not to use, you avoid these risks. Delay taking up cannabis use until later in life Using cannabis at a young age, particularly before age 16, increases the likelihood of developing health, educational and social problems. Avoid cannabis use during adolescence. Generally, the later in life you begin to use cannabis, the lower the risk of problems. Identify and choose lower-risk cannabis products High-potency cannabis products, with high tetrahydro­cannabinol (THC) content, are more likely to result in harms. Some products contain a higher dose of canna­bidiol (CBD), which counteracts some of THC’s adverse effects. This means that products with high CBD-to-THC ratios reduce some of the risks. Know what you’re using. Ideally, choose cannabis products with lower risk of harms. Don’t use synthetic cannabinoids Compared with natural cannabis products, synthetic cannabis products (e.g., K2 or Spice) can lead to more severe health problems, even death. If you use, give preference to natural cannabis products and abstain from synthetics. Avoid smoking burnt cannabis—choose safer ways of using Smoking burnt cannabis, especially when combined with tobacco, can harm your lungs and respiratory system. Choose other methods, such as vaporizers or edibles instead—but recognize that they also come with some risks. For example, edibles are safer for your lungs, but you may consume larger doses and experience more severe impairment because psychoactive effects are delayed. If you smoke cannabis, avoid harmful smoking practices If you smoke cannabis, avoid “deep inhalation” or “breath-holding.” These practices are meant to increase psychoactive experiences, but they increase the amount of toxic material absorbed by your lungs and into your body. Limit and reduce how often you use cannabis Frequent cannabis use (i.e., daily or almost every day) is strongly linked to a higher risk of health and social problems. Limit yourself—and ideally your friends or others you may be using with—to occasional use, such as on weekends or one day a week at most. Don’t use and drive, or operate other machinery Driving while impaired by cannabis substantially increases your risk of being involved in a motor-vehicle accident resulting in injury or death. Don’t use and drive, or use other machinery. Wait at least six hours after using cannabis—or even longer if you need. Combining cannabis and alcohol further increases impairment, so be sure to avoid this combination if you plan to drive. Avoid cannabis use altogether if you are at risk for mental health problems or are pregnant Some individuals should not use cannabis because of specific risk profiles. If you or an immediate family mem­ber has a history of psychosis or substance use disorder, your risk of cannabis-related mental health problems increases, and you should abstain from use. Pregnant women should not use cannabis because it could harm the fetus or newborn. Avoid combining the risks identified above The more of these risky behaviours you engage in when using cannabis, the higher your risk of harms. For ex­ample, initiating cannabis use at a young age and smok­ing high-potency products every day puts you at much higher risk of both immediate and long-term problems. Avoid combining these high-risk choices. When choosing to use cannabis, you can actively take steps to reduce risks to your health. Below are 10 science-based recommendations for how to do so. These recommendations are aimed mainly at non-medical cannabis use. © 2017 CAMH 5638 / 06-2017
Documents
Less detail

Cannabis for Medical Purposes

https://policybase.cma.ca/en/permalink/policy10045
Last Reviewed
2019-03-03
Date
2010-12-04
Topics
Pharmaceuticals/ prescribing/ cannabis/ marijuana/ drugs
  1 document  
Policy Type
Policy document
Last Reviewed
2019-03-03
Date
2010-12-04
Topics
Pharmaceuticals/ prescribing/ cannabis/ marijuana/ drugs
Text
The Canadian Medical Association (CMA) has always recognized the unique requirements of those individuals suffering from a terminal illness or chronic disease for which conventional therapies have not been effective and for whom cannabis may provide relief. However, there are a number of concerns, primarily related to the limited evidence to support many of the therapeutic claims made regarding cannabis for medical purposes, and the need to support health practitioners in their practice.1,2,3,4 While the indications for using cannabis to treat some conditions have been well studied, less information is available about many potential medical uses. Physicians who wish to authorize the use of cannabis for patients in their practices should consult relevant CMPA policy5 and guidelines developed by the provincial and territorial medical regulatory authorities to ensure appropriate medico-legal protection. The CMA’s policy Authorizing Marijuana for Medical Purposes6, as well as the CMA’s Guidelines For Physicians In Interactions With Industry7 should also be consulted. The CMA makes the following recommendations: 1. Increase support for the advancement of scientific knowledge about the medical use of cannabis. The CMA encourages the government to support rigorous scientific research into the efficacy for therapeutic claims, safety, dose-response relationships, potential interactions and the most effective routes of delivery, and in various populations. 2. Apply the same regulatory oversight and evidence standards to cannabis as to pharmaceutical products under the Food and Drug Act, designed to protect the public by the assessment for safety and efficacy. 3. Increase support for physicians on the use of cannabis for medical purposes in their practice settings. As such, CMA calls on the government to work with the CMA, The College of Family Physicians of Canada, the Royal College of Physicians and Surgeons, 2 and other relevant stakeholders, to develop unbiased, accredited education options and licensing programs for physicians who authorize the use of cannabis for their patients based on the best available evidence. Background In 2001, Health Canada enacted the Marihuana Medical Access Regulations (MMAR). These were in response to an Ontario Court of Appeal finding that banning cannabis for medicinal purposes violated the Charter of Rights and Freedoms.8 The MMAR, as enacted, was designed to establish a framework to allow legal access to cannabis, then an illegal drug, for the relief of pain, nausea and other symptoms by people suffering from serious illness where conventional treatments had failed. While recognizing the needs of those suffering from terminal illness or chronic disease, CMA raised strong objections to the proposed regulations. There were concerns about the lack of evidence on the risks and benefits associated with the use of cannabis. This made it difficult for physicians to advise their patients appropriately and manage doses or potential side effects. The CMA believes that physicians should not be put in the untenable position of gatekeepers for a proposed medical intervention that has not undergone established regulatory review processes as required for all prescription medicines. Additionally, there were concerns about medico-legal liability, and the Canadian Medical Protective Association (CMPA), encouraged those physicians that were uncomfortable with the regulations to refrain from authorizing cannabis to patients. Various revisions were made to the MMAR, and then these were substituted by the Marihuana for Medical Purposes Regulations (MMPR) in 2013/ 2014 and subsequently by the Access to Cannabis for Medical Purposes Regulations (ACMPR) in 2016 and now as part of the Cannabis Act (Section 14)9. Healthcare practitioners that wish to authorize cannabis for their patients are required to sign a medical document, indicating the daily quantity of dried cannabis, expressed in grams. For the most part, these revisions have been in response to decisions from various court decisions across the country.10,11,12 Courts have consistently sided with patients’ rights to relieve symptoms of terminal disease or certain chronic conditions, despite the limited data on the effectiveness of cannabis. Courts have not addressed the ethical position in which physicians are placed as a result of becoming the gate keeper for access to a medication without adequate evidence. The CMA participated in many Health Canada consultations with stakeholders as well as scientific advisory committees and continued to express the concerns of the physician community. As previously noted, the Federal government has been constrained by the decisions of Canadian courts. 3 The current state of evidence regarding harms of cannabis use is also limited but points to some serious concerns. Ongoing research has shown that regular cannabis use during brain development (up to approximately 25 years old) is linked to an increased risk of mental health disorders including depression, anxiety, and schizophrenia, especially if there is a personal or family history of mental illness. Long term use has also been associated with issues of attention, impulse control and emotional regulation. Smoking of cannabis also has pulmonary consequences such as chronic bronchitis. It is also linked to poorer pregnancy outcomes. Physicians are also concerned with dependence, which occurs in up to 10% of regular users. From a public and personal safety standpoint, cannabis can impact judgement and increases the risk of accidents (e.g. motor vehicle incidents). For many individuals, cannabis use is not without adverse consequences.3,13,14 Pharmaceutically prepared alternative options, often administered orally, are also available and regulated in Canada.15 These drugs mimic the action of delta-9-tetra-hydrocannabional (THC) and other cannabinoids and have undergone clinical trials to demonstrate safety and effectiveness and have been approved for use through the Food and Drug Act. Of note is that in this format, the toxic by-products of smoked marijuana are avoided.16 However, the need for more research is evident. Approved by the CMA Board in December 2010. Last reviewed and approved by the CMA Board in March 2019. References 1 Allan GM, Ramji J, Perry D, et al. Simplified guideline for prescribing medical cannabinoids in primary care. Canadian Family Physician, 2018;64(2):111-120. Available: http://www.cfp.ca/content/cfp/64/2/111.full.pdf (accessed 2019 Jan 8). 2 College of Family Physicians of Canada (CFPC). Authorizing Dried Cannabis for Chronic Pain or Anxiety: Preliminary Guidance. Mississauga: CFPC; 2014. Available: https://www.cfpc.ca/uploadedFiles/Resources/_PDFs/Authorizing%20Dried%20Cannabis%20for%20Chronic%20Pain%20or%20Anxiety.pdf (accessed 2019 Jan 8). 3 The National Academies of Sciences, Engineering and Medicine. The health effects of cannabis and cannabinoids: the current state of evidence and recommendations for research. Washington, DC: National Academies Press; 2017. 4 Whiting PF, Wolff RF, Deshpande S, et al. Cannabinoids for medical use: a systematic review and meta-analysis. JAMA 2015;313(24):2456-73. 5 Canadian Medical Protective Association (CMPA). Medical marijuana: considerations for Canadian doctors. Ottawa: CMPA; 2018. Available: https://www.cmpa-acpm.ca/en/advice-publications/browse-articles/2014/medical-marijuana-new-regulations-new-college-guidance-for-canadian-doctors (accessed 2019 Jan 8). 6 Canadian Medical Association (CMA). Authorizing marijuana for medical purposes. Ottawa: CMA; 2014. Available: https://policybase.cma.ca/en/permalink/policy11514 http://policybase.cma.ca/dbtw-wpd/Policypdf/PD15-04.pdf (accessed 2019 Jan 8). 7 Canadian Medical Association. (CMA) Guidelines for Physicians In Interactions With Industry. Ottawa: CMA; 2007. Available: http://policybase.cma.ca/dbtw-wpd/Policypdf/PD08-01.pdf. (accessed 2019 Jan22). 4 8 R. v. Parker, 2000 CanLII 5762 (ON CA). Available: http://canlii.ca/t/1fb95 (accessed 2019 Jan 8). 9 Cannabis Act. Access to Cannabis for Medical Purposes. Section 14. 2018. Available: https://laws-lois.justice.gc.ca/eng/regulations/SOR-2018-144/page-28.html#h-81 (accessed 2019 Jan 8). 10 Hitzig v. Canada, 2003 CanLII 3451 (ON SC). Available: http://canlii.ca/t/1c9jd (accessed 2019 Jan 8). 11 Allard v. Canada, [2016] 3 FCR 303, 2016 FC 236 (CanLII), Available: http://canlii.ca/t/gngc5 (accessed 2019 Jan 8). 12 R. v. Smith, 2014 ONCJ 133 (CanLII). Available: http://canlii.ca/t/g68gk (accessed 2019 Jan 8). 13 Volkow ND, Baler RD, Compton WM, Weiss SRB. Adverse health effects of marijuana use. N Engl J Med. 2014;370(23):2219–2227. 14 World Health Organization. The health and social effects of nonmedical cannabis use. Geneva: World Health Organization; 2016. Available: https://www.who.int/substance_abuse/publications/msbcannabis.pdf (accessed 2019 Jan 8). 15 Ware MA. Is there a role for marijuana in medical practice? Can Fam Physician 2006;52(12):1531-1533. Available: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1952544/pdf/0530022a.pdf (accessed 2019 Jan 8). 16 Engels FK, de Jong FA, Mathijssen RHJ, et.al. Medicinal cannabis in oncology. Eur J Cancer. 2007;43(18):2638-2644. Available: https://www.clinicalkey.com/service/content/pdf/watermarked/1-s2.0-S0959804907007368.pdf?locale=en_US (accessed 2019 Jan 8).
Documents
Less detail

Authorizing Cannabis for Medical Purposes

https://policybase.cma.ca/en/permalink/policy11514
Last Reviewed
2020-02-29
Date
2015-02-28
Topics
Pharmaceuticals/ prescribing/ cannabis/ marijuana/ drugs
  1 document  
Policy Type
Policy document
Last Reviewed
2020-02-29
Date
2015-02-28
Topics
Pharmaceuticals/ prescribing/ cannabis/ marijuana/ drugs
Text
Authorizing Cannabis for Medical Purposes The legalization of cannabis for recreational purposes came into effect with the Cannabis Act in October 2018, and patients continue to have access to cannabis for therapeutic purposes. The Cannabis Regulations have replaced the Access to Cannabis for Medical Purposes Regulations. Patients can obtain cannabis for medical purposes when a physician or nurse practitioner provides a “medical document” , authorizing its use, and determining the daily dried cannabis dose in grams. With the authorization, patients have the choice whether to (a) buy directly from a federally licensed producer; (b) register with Health Canada to produce a limited amount for personal consumption; (c) designate someone to produce it for them; or (d) buy cannabis at provincial or territorial authorized retail outlets or online sales platforms, if above the legal age limit. While acknowledging the unique requirements of patients suffering from a terminal illness or chronic disease for which conventional therapies have not been effective and for whom cannabis may provide relief, physicians remain concerned about the serious lack of clinical research, guidance and regulatory oversight for cannabis as a medical treatment. There is insufficient clinical information on safety and efficacy for most therapeutic claims. There is little information around therapeutic and toxic dosages and knowledge on interactions with medications. Besides the need for appropriate research, health practitioners would benefit from unbiased, accredited educational modules and decision support tools based on the best available evidence. The Canadian Medical Association has consistently expressed concern with the role of gatekeeper that physicians have been asked to take as a result of court decisions. Physicians should not feel obligated to authorize cannabis for medical purposes. Physicians who choose to authorize cannabis for their patients must comply with their provincial or territorial regulatory College's relevant guideline or policy. They should also be familiar with regulations and guidance, particularly:
Health Canada’s Information for Health Care Practitioners – Medical Use of Cannabis (monograph, summary and daily dose fact sheet),
the Canadian Medical Protective Association’s guidance;
the College of Family Physicians of Canada’s preliminary guidance Authorizing Dried Cannabis for Chronic Pain or Anxiety; and
the Simplified guideline for prescribing medical cannabinoids in primary care, published in the Canadian Family Physician. The CMA recommends that physicians should:
Ensure that there is no conflict of interest, such as direct or indirect economic interest in a licensed cannabis producer or be involved in dispensing cannabis;
Treat the authorization as an insured service, similar to a prescription, and not charge patients or the licensed producer for this service;
Until such time as there is compelling evidence of its efficacy and safety for specific indications, consider authorizing cannabis only after conventional therapies are proven ineffective in treating patients’ conditions;
Have the necessary clinical knowledge to authorize cannabis for medical purposes;
Only authorize in the context of an established patient-physician relationship;
Assess the patient’s medical history, conduct a physical examination and assess for the risk of addiction and diversion, using available clinical support tools and tests;
Engage in a consent discussion with patients which includes information about the known benefits and adverse health effects of cannabis in its various forms (e.g., edibles), including the risk of impairment to activities such as driving and work;
Advise the patient regarding harm reduction strategies and the prevention of accidental exposure for children and other people;
Document all consent discussions in patients' medical records;
Reassess the patient on a regular basis for its effectiveness to address the medical condition for which cannabis was authorized, as well as for addiction and diversion, to support maintenance, adjustment or discontinuation of treatment; and
Record the authorization of cannabis for medical purposes similar to when prescribing a controlled medication. The Cannabis Regulations provide some consistency with many established provincial and territorial prescription monitoring programs for controlled substances. Licensed producers of cannabis for medical purposes are required to provide information to provincial and territorial medical licensing bodies upon request, including healthcare practitioner information, daily quantity of dried cannabis supported, period of use, date of document and basic patient information. The Minister of Health can also report physicians to their College should there be reasonable grounds that there has been a contravention of the Narcotic Control Regulations or the Cannabis Regulations. Approved by CMA Board February 2015 Latest update approved by CMA Board in February 2020
Documents
Less detail