Note 4 - Property and Equipment - Property and Equipment, Net (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Property, plant, and equipment, gross	$ 443,008	$ 387,665
Less accumulated depreciation and amortization	(391,724)	(387,665)
Property and equipment, net	51,284	0
Medical Equipment [Member]
Property, plant, and equipment, gross	387,665	387,665
Office Warehouse Equipment [Member]
Property, plant, and equipment, gross	35,377
Warehouse and Production Equipment [Member]
Property, plant, and equipment, gross	$ 19,966

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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