Cetirizine Dihydrochloride API: Second-Generation Antihistamine Profile
Cetirizine is a popular second‑generation antihistamine for allergic conditions. Learn how the API is used and what quality aspects matter most.
Overview of Cetirizine Dihydrochloride API
Cetirizine is a second‑generation antihistamine with minimal sedative effect at recommended doses. It is widely used for allergic rhinitis, chronic urticaria, and other histamine‑mediated conditions. The dihydrochloride salt is the common API form for oral solid and liquid formulations.
Main Indications
- Seasonal and perennial allergic rhinitis
- Chronic idiopathic urticaria
- Other allergic skin manifestations
Quality Considerations
High‑quality Cetirizine API must meet tight limits on assay, chiral purity where applicable, residual solvents, and related substances. Stability in the presence of light and moisture should be evaluated, with packaging designed to minimise degradation throughout the product life cycle.
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