Answer
No. Levocetirizine is the active R-enantiomer contained within cetirizine, although both block peripheral histamine receptors and treat similar allergy symptoms.
Sources for this answer
- Levocetirizine 5 mg film-coated tablets — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.