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)
Nasal congestion22.04.04.0010.000285%
Nasopharyngitis22.07.03.002; 11.01.13.002--Not Available
Nausea07.01.07.001--
Obsessive thoughts19.06.05.0010.000453%Not Available
Oculogyric crisis17.01.03.002; 06.05.02.002--Not Available
Oedema14.05.06.010; 08.01.07.006--Not Available
Otitis media11.01.05.004; 04.05.01.001--
Palpitations02.11.04.012--
Paraesthesia17.02.06.005; 23.03.03.094--
Pharyngitis22.07.03.004; 11.01.13.003; 07.05.07.004--
Premature baby18.04.02.0010.000130%Not Available
Pruritus23.03.12.0010.000415%
Pyrexia08.05.02.0030.000130%
Rash23.03.13.0010.000415%Not Available
Rhinorrhoea22.12.03.0210.000441%
Seizure17.12.03.0010.000259%
Shock24.06.02.002--Not Available
Sinus congestion22.04.06.0010.000441%Not Available
Skin exfoliation23.03.07.0030.000130%Not Available
Sleep disorder19.02.04.0010.000441%Not Available
Sneezing22.12.03.0240.000441%
Social avoidant behaviour19.05.01.0070.000194%Not Available
Somnolence17.02.04.006; 19.02.05.0030.001710%
Stillbirth18.01.02.002; 08.04.01.006--Not Available
Suicidal ideation19.12.01.003--
Suicide attempt19.12.01.0040.000130%
Syncope17.02.04.008; 02.11.04.015; 24.06.02.012--
Tachycardia02.03.02.007--Not Available
Therapeutic response decreased08.06.01.0160.000661%Not Available
Tremor17.01.06.002--
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