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RESEARCH AND DEVELOPMENT - Disclosure of research and development expense (Details) - CAD ($)
4 Months Ended 12 Months Ended
Sep. 30, 2019
Sep. 30, 2021
Sep. 30, 2020
Research And Development [Line Items]      
Research and development expense $ 42,009 $ 6,313,988 $ 354,852
Laboratory costs [Member]      
Research And Development [Line Items]      
Research and development expense 27,164 82,871 25,874
Novel drug development [Member]      
Research And Development [Line Items]      
Research and development expense 0 3,638,910 110,029
Patents and related payments [Member]      
Research And Development [Line Items]      
Research and development expense 0 513,302 13,895
Salary and subcontractors [Member]      
Research And Development [Line Items]      
Research and development expense 14,845 1,369,769 43,754
Share-based compensation [Member]      
Research And Development [Line Items]      
Research and development expense $ 0 $ 709,136 $ 161,300