Condensed Interim Consolidated Statements of Cash Flows (Unaudited) - CAD ($)	9 Months Ended
	Feb. 28, 2019	Feb. 28, 2018
Operating activities
Net loss for the period	$ (7,995,922)	$ (7,113,643)
Add items not affecting cash:
Depreciation	11,262	13,477
Stock-based compensation (note 5)	962,148	508,865
Foreign exchange gain (loss)	(38,657)	138,781
Changes in non-cash items:
Accounts receivable	(20,496)	(13,292)
Prepaid expenses	(135,103)	(69,340)
Accounts payable and accrued liabilities	(290,717)	56,231
Cash used in operating activities	(7,507,485)	(6,478,921)
Financing activities
Cash received from issuance of shares	10,033,926	10,073,362
Share issuance costs	(31,059)	(107,348)
Cash provided by financing activities	10,002,867	9,966,014
Investing activities
Expenditures on property and equipment	(1,769)	(7,710)
Capitalized acquisition costs	(47,318)	(38,384)
Cash used in investing activities	(49,087)	(46,094)
Effect of foreign exchange on cash	60,271	(170,097)
Increase in cash and cash equivalents	2,506,566	3,270,902
Cash and cash equivalents, beginning of the period	2,610,541	1,300,553
Cash and cash equivalents, end of the period	$ 5,117,107	$ 4,571,455