Levocetirizine is a low-sedating antihistamine; most adverse effects are mild and transient.
Somnolence, fatigue, and dry mouth occur in a minority of patients. Rarely, behavioral changes or allergic reactions may develop—stop the medicine if concerning symptoms arise.
2 documented effects
Not specified
Administer at bedtime; monitor school performance
Assess for daytime sleepiness or difficulty concentrating
Not specified
Stop the medication and discuss alternative therapy
Parents should watch for mood changes, especially in younger children
1 documented effect
Not specified
Give with food and maintain hydration
Reassess if symptoms persist beyond a few days
1 documented effect
Not specified
Symptomatic care (saline, humidifier)
Distinguish from infection needing evaluation
1 documented effect
Not specified
Stop immediately; seek urgent care for facial swelling or breathing difficulty
Educate families about signs of allergic reaction
For babies taking Levocetirizine, watch for signs of side effects. This medication is generally well-tolerated in infants when used as directed.
This allergy medicine usually doesn’t make kids sleepy, but tell us about tummy troubles or cranky behavior.
Let us know if you feel extra tired, dizzy, or if your stomach hurts.
Avoid alcohol or other sedating medicines. Report any unusual tiredness, mood changes, or swelling right away.
A: Switch to bedtime dosing and monitor. Persistent daytime sleepiness warrants reassessment.
When to validate: Contact clinician if school or activities are affected
A: Stop the medication and call if your child becomes unusually irritable or agitated.
When to validate: Immediate evaluation for severe mood changes or aggression
Classify levocetirizine adverse effects to guide action.
Parent and clinician concerns about Levocetirizine