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Cetirizine

Drug ingredient

CAS 83881-51-0

This chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.

Molecular structure of 83881-51-0
US productionNot reported
Import value, 2024$7.6B
Top sourceIreland 61%

This chemical is not on EPA’s Toxic Substances Control Act inventory, the list behind EPA’s production survey.

Why supply is unknown

Production is reported production, not a complete census of factories. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 293359 · basket

These shares come from HS customs code 293359, which covers 295 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
IE 61%IrelandCH 30%SwitzerlandGB 2%United KingdomCN 2%ChinaIN 1%India
2 FDA-registered drug labelers
Dr. Reddy's Laboratories Limited
Harrow Eye, LLC

Why It Matters

Sectors
Health
Downstream Uses

Appears in 1 drug and cosmetic product listings (FDA).

  • •Zerviate
FDA Shortage Status
No FDA shortage records

Chemical Identity

CAS83881-51-0
PubChem CID2678
DTXSIDDTXSID4022787
FormulaC21H25ClN2O3
Mol. Weight388.9 g/mol
SMILESC1CN(CCN1CCOCC(=O)O)C(C2=CC=CC=C2)C3=CC=C(C=C3)Cl

Data Sources

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Brief citations

Cetirizine (CAS 83881-51-0) https://chemicalindependence.com/chemical/83881-51-0/ PubChem: 2678. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/2678 FDA National Drug Code directory: CAS 83881-51-0. Retrieved 2026-04-25. https://open.fda.gov/data/ndc/ FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 293359 for CAS 83881-51-0. Reporting year: 2024. https://usatrade.census.gov/