Note 3 - Balance Sheet Components - Prepaid Expenses (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Prepaid clinical trial costs (current portion)	$ 1,231,337	$ 0
Prepaid insurance premiums	143,450	123,248
Prepaid rent	13,045	13,045
Other prepaid expenses	72,375	19,947
Total prepaid expenses	$ 1,460,207	$ 156,240

Amount of prepaid clinical trial expenses in the next 12 months

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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