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Note 2 - Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2024

Notes Tables

Schedule of Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Table Text Block]

		June 30,				December 31,
		2024				2023
Cash and cash equivalents		$	751			$	3,130
Cash and cash equivalents, discontinued operations			—				(206	)
Restricted cash included in other assets			476				476
Total cash, cash equivalents, and restricted cash in the condensed consolidated statements of cash flows		$	1,227			$	3,400

Disaggregation of Revenue [Table Text Block]

		Three Months Ended June 30,								Six Months Ended June 30,
		2024				2023				2024				2023
Avenova Spray		$	2,125			$	1,758			$	4,221			$	3,695
NeutroPhase			—				1,043				—				1,043
Other products			262				722				790				1,117
Total product revenue, net			2,387				3,523				5,011				5,855
Other revenue, net			13				11				20				18
Total sales, net		$	2,400			$	3,534			$	5,031			$	5,873

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

		June 30,				December 31,
Major distribution partner		2024				2023
Major U.S. Retailer A			35	%			22	%
Avenova Spray Pharmacy Distributor A			33	%			14	%
Avenova Spray Pharmacy Distributor B			12	%			*	%
Chongqing Pioneer Pharma Holdings Limited			*	%			36	%

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

		Balance at June 30,
		2024*				2023*
Common stock equivalent of Series B Non-Voting Convertible Preferred Stock (the “Series B Preferred Stock”)			15,065				201,432
Common stock equivalent of Series C Non-Voting Convertible Preferred Stock (the “Series C Preferred Stock”)			—				24,134
Stock options			6,904				4,301
Stock warrants			224,777				210,929
			246,746				440,796

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