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                                                                Synonyms: Aerosporin®
                                 
                                                         
                            
                            
                            
                                 
                                
                                polymyxin B is an approved drug (FDA (1964, no prior history available)) 
                                                        
                                                    
                                Compound class: 
                                                            Peptide
                                 
                                
                                    
                                        Comment: Polymyxin B is a mixture of the polypeptides polymyxins B1 and B2, both obtained from Bacillus polymyxa strains. It is an antibacterial compound that demonstrates bactericidal action against almost all Gram-negative bacilli except the Proteus group.
                                    
                                 
                            
                            
                          
                                
                                    
                                
                          
                                   
                                   
                                  
                                    
                                    
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Classification ![]()  | 
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| Compound class | Peptide | 
| Approved drug? | Yes. US FDA (1964) | 
| WHO Essential Medicine | WHO Essential Medicines List (EML) (23rd List, 2023). Access PDF version. Click to view more information about the WHO Model Lists of Essential Medicines.  | 
                                                        
International Nonproprietary Names ![]()  | 
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| INN number | INN | 
| 490 | polymyxin B | 
Synonyms ![]()  | 
                                                        
| Aerosporin® | 
Database Links ![]()  | 
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| Specialist databases | |
                                                                        Antibiotic DB
                                                                        
                                                                              
                                                                        
                                                                             
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                                                                    Polymyxin B | 
| Other databases | |
| ChEMBL Ligand | CHEMBL241797 | 
| GtoPdb PubChem SID | 381745019 | 
| PubChem CID | 4868 | 
| Search Google for chemical match using the InChIKey | WQVJHHACXVLGBL-UHFFFAOYSA-N | 
| Search Google for chemicals with the same backbone | WQVJHHACXVLGBL | 
| Search PubMed clinical trials | polymyxin B | 
| Search PubMed titles | polymyxin B | 
| Search PubMed titles/abstracts | polymyxin B | 
| UniChem Compound Search for chemical match using the InChIKey | WQVJHHACXVLGBL-UHFFFAOYSA-N | 
| UniChem Connectivity Search for chemical match using the InChIKey | WQVJHHACXVLGBL-UHFFFAOYSA-N |