Medical cannabis (marijuana) can be used to provide relief from symptoms associated with a variety of disorders that have not responded to conventional medicine, or when the effects of conventional medicine are not well tolerated by the patient.

Under the Access to Cannabis for Medical Purposes Regulations (ACMPR), medical cannabis clinics in Ontario can provide consultation and assessment for suitability of medical cannabis treatment, and authorization (registration) with a licensed producer of medical marijuana. Producers of medical marijuana in Canada are licensed and authorized by the federal government.