Annual report pursuant to Section 13 and 15(d)

5. COMMON STOCK TRANSACTIONS (Details Narrative)

5. COMMON STOCK TRANSACTIONS (Details Narrative) - USD ($)	12 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2018
Shelf Offering [Member]
Stock issued new, shares	333,300,000	161,700,000
Proceeds from sale of equity	$ 2,100,000	$ 2,300,000
Common Stock [Member] \| Director Letter Agreement [Member] \| Four Nonemployee Members [Member]
Stock issued for compensation, shares	2,000,000
Stock based compensation expense	$ 19,212	101,288
Unvested shares	0
Common Stock [Member] \| Director Letter Agreement [Member] \| Four Nonemployee Member [Member]
Stock issued for compensation, shares	2,000,000
Stock based compensation expense	$ 65,339
Unvested shares	0
Common Stock [Member] \| Consulting Agreements [Member] \| Three Consultants [Member]
Stock issued for compensation, shares			4,200,000
Stock based compensation expense	$ 0	$ 73,800
Unvested shares	0	0
Common Stock [Member] \| Consulting Agreements [Member] \| Five Consultants [Member]
Stock issued for compensation, shares	3,200,000
Stock based compensation expense	$ 108,575	$ 17,350
Unvested shares	200,000
Common Stock [Member] \| 2018 Compensation Agreement [Member] \| Officers [Member]
Stock issued for compensation, shares			6,600,000
Stock based compensation expense	$ 0	$ 245,520
Unvested shares	0	0
Common Stock [Member] \| 2019 Compensation Agreement [Member] \| Officers [Member]
Stock issued for compensation, shares		6,600,000
Stock based compensation expense	$ 278,891	$ 47,809
Unvested shares	0	4,400,000
Common Stock [Member] \| 2019 Compensation Agreement [Member] \| Four Consultants [Member]
Stock issued for compensation, shares		4,450,000
Stock based compensation expense	$ 24,726	$ 230,829
Unvested shares	0	408,333
Common Stock [Member] \| Medical And Scientific Advisory Board [Member] \| A Consultant [Member]
Stock issued for compensation, shares	2,500,000
Stock based compensation expense	$ 22,584	$ 107,749
Unvested shares	0
Common Stock [Member] \| 2020 Compensation Agreement [Member] \| Officers [Member]
Stock issued for compensation, shares	6,600,000
Stock based compensation expense	$ 89,759
Unvested shares	4,400,000
Common Stock [Member] \| Four Directors [Member] \| Director Letter Agreement [Member]
Stock issued for compensation, shares			1,750,000
Stock based compensation expense	$ 0	$ 24,165
Restricted Stock [Member] \| Stock Subscription Agreements [Member]
Stock issued new, shares	103,000,000
Proceeds from sale of equity	$ 515,000