Share capital (Tables)

3 Months Ended

Mar. 31, 2019

Disclosure of classes of share capital [abstract]

Weighted average exercise price, and the weighted average remaining contractual life

			Options
			outstanding		Weighted
			Weighted		average
			average		remaining
			exercise		contractual
	Number		Price		life (in years)
Outstanding, December 31, 2018		5,740,000	$	1.76		6.37
Expired		–		–
Cancelled		–		–		–
Granted		–		–
Outstanding, March 31, 2019		5,740,000	$	1.76		6.13
Options exercisable		5,740,000	$	1.76		6.13

Stock and stock option-based compensation expense

	Three months
	ended March 31,
Employee expense	2019		2018
Stock and stock option compensation granted in
2015		677,434		1,006,805
2018		13,038		–
Total stock-based compensation expense recognized	$	690,472	$	1,006,805

Stock-based compensation expense

	Three months
	ended March 31,
	2019		2018
Stock-based compensation pertaining to general and administrative expenses	$	338,717	$	503,402
Stock-based compensation pertaining to research and development expenses		351,755		503,403
Total	$	690,472	$	1,006,805