Important Update: Medical Document Expiry Dates. Spectrum Therapeutics and Health Canada are committed to meeting the needs of medical cannabis patients during the COVID-19 pandemic. As such, an extension will be applied to the expiry date of patient registrations that expire between March 13, 2020 and September 30, 2020 Our system will update all accounts shortly, however, if you require this completed immediately please contact Customer Care with questions or concerns.