Note 3 - Balance Sheet Components - Prepaid Expenses (Details) - USD ($)	Mar. 31, 2026	Dec. 31, 2025
Prepaid clinical trial costs	$ 832,889	$ 1,197,679
Prepaid insurance premiums	110,045	165,067
Prepaid rent	25,974	16,000
Prepaid contract manufacturing costs	130,340	783,321
Other prepaid expenses	60,333	66,843
Total prepaid expenses	$ 1,159,581	$ 2,228,910