Note 6 - Inventory (Details Textual) - USD ($) |
Mar. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Inventory, Finished Goods, Gross, Total | $ 88,492 | $ 92,048 |
| Clinical Trials [Member] | ||
| Inventory, Finished Goods, Gross, Total | $ 4,000 |
| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|