v3.26.1
Right-of-use assets (Details) - CHF (SFr)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Right-of-use assets    
Opening amount SFr 41,578 SFr 330,332
Depreciation charge (8,048) (74,014)
Effect of lease modifications   23,940
Disposals   (7,408)
Assets transferred to Neurosterix Pharma Srl   (231,272)
Closing amount 33,530 41,578
Cash outflow for leases 7,306 73,688
Cost    
Right-of-use assets    
Opening amount 111,642  
Closing amount 111,642 111,642
Accumulated depreciation    
Right-of-use assets    
Opening amount (70,064)  
Closing amount (78,112) (70,064)
Properties    
Right-of-use assets    
Opening amount 41,578 328,524
Depreciation charge (8,048) (73,337)
Effect of lease modifications   23,940
Disposals   (7,408)
Assets transferred to Neurosterix Pharma Srl   (230,141)
Closing amount 33,530 41,578
Properties | Cost    
Right-of-use assets    
Opening amount 111,642  
Closing amount 111,642 111,642
Properties | Accumulated depreciation    
Right-of-use assets    
Opening amount (70,064)  
Closing amount SFr (78,112) (70,064)
Equipment    
Right-of-use assets    
Opening amount   1,808
Depreciation charge   (677)
Assets transferred to Neurosterix Pharma Srl   SFr (1,131)