Note 7 - Commitments and Contingencies (Details Textual)		12 Months Ended
May 01, 2017 USD ($)	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 USD ($) shares
Operating Leases, Rent Expense, Net, Total		$ 395,190	$ 114,460
Lessee, Operating Lease, Number of Leases		5
Operating Lease, Weighted Average Remaining Lease Term		2 years 182 days
Operating Lease, Weighted Average Discount Rate, Percent		9.50%
Research and Development Expense, Total		$ 4,741,130	$ 3,922,665
Stock Issued During Period, Shares, Issued for Services \| shares		13,601	21,127
Patent License Agreement with the Board of Regents of the University of Texas (NSAIDs) [Member]
Research and Development Expense, Total		$ 392,840	$ 85,330
Investor Relations Agreement [Member]
Service Agreement, Monthly Fee	$ 15,000
Service Agreement, Monthly Fee Payable in Cash	7,500
Service Agreement, Monthly Fee Payable in Common Stock	$ 7,500

The number of operating leases held by the lessee.

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The fee payable each month by the reporting entity under a service agreement.

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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

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