Levocetirizine is fast-acting and typically starts working after 1 hour. If it is working, you will see an improvement in your sneezing, runny nose, and itchy eyes and this improvement should last approximately 24 hours per dose. It is important that you take the medication daily as the effects will wear off after approximately 24 hours.
Please see the full Prescribing Information for more information.
This information is not, nor is it intended to be, a substitute for professional medical advice, diagnosis, or treatment, and should never be relied upon for specific medical advice. If you have any questions or concerns, please talk to your healthcare provider.