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Levocetirizine

CHEMBL1201191 Phase 4 承認済み Small molecule
Half-Life
—
Bioavailability
—
Protein Binding
—
Molecular Weight
388.9 g/mol
LogP
1.7
Phase
4

The active R-enantiomer of cetirizine, a second-generation antihistamine used to treat allergic rhinitis, hives, and skin allergy symptoms. It provides relief from sneezing, runny nose, and itching with less sedation than older antihistamines.

分子量

388.9000 g/mol

LogP

1.70

TPSA

53.00 Ų

リピンスキーの五則

適合

治療領域

Asthma Breast Cancer Atopic Dermatitis

作用機序

Competitively blocks histamine H1 receptors on effector cells, preventing histamine-mediated vasodilation, increased vascular permeability, bronchoconstriction, and pruritus. First-generation agents also cross the blood-brain barrier, causing sedation.

Pharmacokinetics (PK)

Pharmacodynamics (PD)

機序

Competitively blocks histamine H1 receptors on effector cells, preventing histamine-mediated vasodilation, increased vascular permeability, bronchoconstriction, and pruritus. First-generation agents also cross the blood-brain barrier, causing sedation.

2D構造

SVG PNG

Cite this structure


                        

                            
                            
                        

                    

                


                
                

                    

                    

                        
Embed this structure

                        

                        

                            
                            
                        

                    

                

                

                
                

                    
SMILES

                    
O=C(O)COCCN1CCN([C@H](c2ccccc2)c2ccc(Cl)cc2)CC1

                

                

                
                

                    
InChI

                    
InChI=1S/C21H25ClN2O3/c22-19-8-6-18(7-9-19)21(17-4-2-1-3-5-17)24-12-10-23(11-13-24)14-15-27-16-20(25)26/h1-9,21H,10-16H2,(H,25,26)/t21-/m1/s1

                

                

                

                    
                    

                        
Molecular Formula

                        
C21H25ClN2O3

                    

                    
                    

                        
HBD / HBA

                        
1 / 5

                    

                    
                    

                        
回転可能結合数

                        
8

                    

                    
                    
                    

                        
重原子数

                        
27

                    

                    
                

            


            
            

                
                


    
    
        
    
    
    
No targets recorded

    
    
Target interaction data is not yet available for this drug.

    



                
            


            
            

                
                


    
    
        
    
    
    
No interactions recorded

    
    
Drug interaction data is not yet available for this compound.

    



                
            


            
            

                
                


    
    
        
    
    
    
No side effects recorded

    
    
Side effect data is not yet available for this drug.

    



                
            


            
            
            

                
よくある質問

                

                    
                    

                        
                        

                            
The active R-enantiomer of cetirizine, a second-generation antihistamine used to treat allergic rhinitis, hives, and skin allergy symptoms. It provides relief from sneezing, runny nose, and itching with less sedation than older antihistamines.

                        

                    

                    

                    

                    
                    

                        
                        

                            
Competitively blocks histamine H1 receptors on effector cells, preventing histamine-mediated vasodilation, increased vascular permeability, bronchoconstriction, and pruritus. First-generation agents also cross the blood-brain barrier, causing sedation.

                        

                    

                    

                    

                    

                        
                        

                            
Yes, Levocetirizine is an approved drug. It has reached clinical phase 4. It is classified as a Small molecule.

                        

                    

                

            

            

            
            

            
            

            
            
{# References & Data Sources section for drug detail pages.
   Renders standard pharmacological database links plus the drug's data_sources field. #}


    
References & Data Sources

    
    
        
        
  • 
            
            
                ChEMBL — European Bioinformatics Institute (EBI).
                CHEMBL1201191.
                Open-access bioactivity database.
            
        
    • 
        
        
        
  • 
            
            
                PubChem — National Center for Biotechnology Information (NCBI).
                CID 1549000.
                Chemical information database.
            
        
    • 
        
        
        
        
    

    
Data aggregated from publicly available pharmacological databases. Last updated 2026-03-04.




        


        
        
    


    



    
医学的免責事項

    

        This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making medication decisions.
    

    

        Data sources:
        ChEMBL,
        PubChem,
        DailyMed.