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Schedule of Information by segment (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Revenue from External Customer [Line Items]    
Cash-based $ 753,124 $ 944,977
Stock-based 418,422 773,203
Patent and licensing legal and filing fees and costs 243,186 978,244
Other consulting and professional fees 735,021 655,854
Insurance expense 434,444 442,976
Other costs and expenses, net 262,360 396,882
Total general and administrative costs 2,846,557 4,192,136
Total 726,232 898,100
Total assets 1,145,503 4,308,620
Research And Development [Member]    
Revenue from External Customer [Line Items]    
Total assets 39,298 78,369
Corporate Segment [Member]    
Revenue from External Customer [Line Items]    
Total assets 1,106,205 4,230,251
UNITED STATES    
Revenue from External Customer [Line Items]    
Total 462,566 359,589
SPAIN    
Revenue from External Customer [Line Items]    
Total 51,022 295,163
CHINA    
Revenue from External Customer [Line Items]    
Total 2,282 17,198
NETHERLANDS    
Revenue from External Customer [Line Items]    
Total 210,362 226,150
Clinical And Related Oversight Costs [Member]    
Revenue from External Customer [Line Items]    
Total 377,958 416,269
Preclinical Research [Member]    
Revenue from External Customer [Line Items]    
Total 329,438 463,093
Regulatory Service Costs [Member]    
Revenue from External Customer [Line Items]    
Total $ 18,836 $ 18,738