Adverse Drug Reaction Classification System

Pharmaceutical Information
Drug Name Levocetirizine
Drug ID BADD_D01272
Description Levocetirizine is a selective histamine H1 antagonist used to treat a variety of allergic symptoms.[A181748,A181790,L7694] It is the R enantiomer of [cetirizine].[L7694] Levocetirizine has greater affinity for the histamine H1 receptor than cetirizine.[L7694] Levocetirizine was granted FDA approval in 1995.[L7694]
Indications and Usage Levocetirizine is indicated to treat symptoms of perennial allergic rhinitis and uncomplicated skin manifestations of chronic idiopathic urticaria.[L7694] It is also used over the counter for a variety of mild allergy symptoms.[A181748]
Marketing Status approved
ATC Code R06AE09
DrugBank ID DB06282
KEGG ID D07402
MeSH ID C472067
PubChem ID 1549000
TTD Drug ID D0M8PW
NDC Product Code Not Available
UNII 6U5EA9RT2O
Synonyms levocetirizine | levocetrizine | acetic acid, (2-(4-((R)-(4-chlorophenyl)phenylmethyl)-1-piperazinyl)ethoxy)- | (2-(4-((R)-p-chloro-alpha-phenylbenzyl)-1-piperazinyl)ethoxy)acetic acid | levocetirizine hydrochloride | Xusal | levocetirizine dihydrochloride | (2-(4-((R)-(4-chlorophenyl)phenylmethyl)piperazin-1-yl)ethoxy)acetic acid dihydrochloride | cetirizine (R)-form dihydrochloride | acetic acid, (2-(4-((R)-(4-chlorophenyl)phenylmethyl)-1-piperazinyl)ethoxy)-, dihydrochloride | Xyzal | UCB-28556
Chemical Information
Molecular Formula C21H25ClN2O3
CAS Registry Number 130018-77-8
SMILES C1CN(CCN1CCOCC(=O)O)C(C2=CC=CC=C2)C3=CC=C(C=C3)Cl
Chemical Structure
ADRs Induced by Drug
*The priority for ADR severity classification is based on FAERS assessment, followed by the most severe level in CTCAE rating. If neither is available, it will be displayed as 'Not available'.
**The 'Not Available' level is hidden by default and can be restored by clicking on the legend twice.
ADR Term ADReCS ID ADR Frequency (FAERS) ADR Severity Grade (FAERS) ADR Severity Grade (CTCAE)
Abortion spontaneous18.01.04.0010.000194%-
Aggression19.05.01.001---
Agitation17.02.05.012; 19.06.02.001--
Anaphylactic shock10.01.07.002; 24.06.02.004---
Angina pectoris02.02.02.002; 24.04.04.0020.000130%
Angioedema10.01.05.009; 22.04.02.008; 23.04.01.001---
Anxiety19.06.02.0020.000130%
Arrhythmia02.03.02.0010.000130%-
Asthenia08.01.01.0010.000194%-
Asthma10.01.03.010; 22.03.01.0020.000130%-
Atrial fibrillation02.03.03.0020.000130%
Blindness06.02.10.003; 17.17.01.0030.000130%-
Body temperature increased13.15.01.001---
Bradycardia02.03.02.0020.000194%-
Chest discomfort02.02.02.009; 08.01.08.019; 22.12.02.0020.000194%-
Choking sensation19.01.02.002; 22.12.03.0040.000130%-
Cholestasis09.01.01.001---
Circulatory collapse24.06.02.0010.000130%-
Condition aggravated08.01.03.0040.000350%-
Constipation07.02.02.001--
Cough22.02.03.0010.000350%
Crying08.01.03.005; 12.02.11.001; 17.02.05.013; 19.04.02.0020.000453%-
Decreased activity08.01.01.006; 19.11.01.0020.000194%-
Delirium19.13.02.0010.000194%
Depressed mood19.15.02.0010.000194%-
Depression19.15.01.0010.000674%
Dermatitis23.03.04.002---
Diarrhoea07.02.01.001--
Diplopia06.02.06.002; 17.17.01.0050.000194%-
Dizziness02.11.04.006; 17.02.05.003; 24.06.02.007--
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