About cetirizine hydrochloride
Second-generation antihistamine
Used for
- Relieves hay fever and other allergy symptoms
- Treats itchy skin rashes, including hives
Usual adult dose
Adults: 10 mg once daily; some may use 5 mg daily.
Usual dose in children
Children 2–5 years: 2.5 mg twice daily. Ages 6–11: 5 mg twice daily.
Common side effects
- Sleepiness or tiredness
- Headache
- Dry mouth
- Nausea
Important warnings
- May cause drowsiness; avoid driving if affected.
- Kidney problems may require a lower dose.
- Do not exceed the recommended dose.
- Seek urgent help for severe allergic reactions.
Pregnancy
Can be used during pregnancy when needed; discuss use with a healthcare professional.
Breastfeeding
Small amounts enter breast milk; use may be considered, but monitor for infant drowsiness or irritability.
Interactions
- Alcohol may increase drowsiness.
- Other medicines that cause drowsiness may intensify this effect.
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 It may be incomplete or out of date.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.