About levocetirizine dihydrochloride
Second-generation antihistamine
Used for
- Relieves allergic rhinitis symptoms, including sneezing, runny nose, and itchy eyes
- Treats chronic hives and itching
Usual adult dose
5 mg by mouth once daily, usually in the evening; some people need 2.5 mg.
Usual dose in children
Ages 6 years and older: 2.5–5 mg once daily. Younger children generally use liquid formulations with age-specific dosing.
Common side effects
- Sleepiness or fatigue
- Dry mouth
- Headache
- Sore throat
Important warnings
- May cause drowsiness; avoid driving if affected.
- Kidney impairment may require a lower dose or avoidance.
- Stop and seek urgent care for difficulty urinating or an allergic reaction.
- Avoid combining with alcohol or other medicines that cause drowsiness.
Pregnancy
Human pregnancy data are limited; use only when considered necessary by a healthcare professional.
Breastfeeding
May pass into breast milk and could cause infant drowsiness or affect milk supply; use cautiously.
Interactions
- Alcohol and sedating medicines may increase drowsiness.
- Theophylline may slightly reduce levocetirizine clearance.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.