Note 7 - Employee Benefit Plan - Option Activity (Details) - USD ($)	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Granted, options (in shares)	23,000,000
Granted, weighted average exercise price (in dollars per share)	$ 0.01
Share-Based Payment Arrangement, Employee [Member]
Outstanding, options (in shares)	17,733,334		17,733,334
Outstanding, weighted average exercise price (in dollars per share)	$ 0.11		$ 0.11
Outstanding, weighted average remaining contractual life (Year)	7 years 21 days	4 years 9 months 18 days	5 years 9 months 18 days
Outstanding, aggregate intrinsic value		$ 0	$ 0
Fully vested and expected to vest, options (in shares)	28,883,334	17,733,334	17,733,334
Fully vested and expected to vest, weighted average exercise price (in dollars per share)	$ 0.06	$ 0.11	$ 0.11
Exercisable, options (in shares)	28,883,334	17,733,334	15,566,668
Exercisable, weighted average exercise price (in dollars per share)	$ 0.06	$ 0.11	$ 0.12
Granted, options (in shares)	15,000,000	0
Granted, weighted average exercise price (in dollars per share)	$ 0.01
Exercised, options (in shares)	0	0
Exercised, weighted average exercise price (in dollars per share)
Forfeited, options (in shares)	(1,150,000)	0
Forfeited, weighted average exercise price (in dollars per share)	$ 0.05
Granted, weighted average remaining contractual life (Year)	10 years
Expired, options (in shares)	(2,700,000)
Expired, weighted average exercise price (in dollars per share)	$ 0.11
Outstanding, options (in shares)	28,883,334	17,733,334
Outstanding, weighted average exercise price (in dollars per share)	$ 0.06	$ 0.11
Share-Based Payment Arrangement, Nonemployee [Member]
Outstanding, options (in shares)	6,483,000		6,483,000
Outstanding, weighted average exercise price (in dollars per share)	$ 0.13		$ 0.13
Outstanding, weighted average remaining contractual life (Year)	7 years 6 months 29 days	6 years 3 months 21 days	7 years 3 months 21 days
Outstanding, aggregate intrinsic value		$ 0	$ 0
Fully vested and expected to vest, options (in shares)	14,483,000	6,483,000	6,483,000
Fully vested and expected to vest, weighted average exercise price (in dollars per share)	$ 0.06	$ 0.13	$ 0.13
Exercisable, options (in shares)	14,483,000	6,483,000	6,483,000
Exercisable, weighted average exercise price (in dollars per share)	$ 0.06	$ 0.13	$ 0.13
Granted, options (in shares)	8,000,000	0
Granted, weighted average exercise price (in dollars per share)
Exercised, options (in shares)	0	0
Forfeited, options (in shares)	0	0
Granted, weighted average remaining contractual life (Year)	10 years
Outstanding, options (in shares)	14,483,000	6,483,000
Outstanding, weighted average exercise price (in dollars per share)	$ 0.06	$ 0.13

GB SCIENCES INC 10-K