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Allergy medicines (antihistamines)

Levocetirizine

Also sold as: Xyzal

No prescription neededAllergy medicines (antihistamines)
Comes as:TabletSyrup

Usual adult dose

Usual adult dose: 5 mg once a day, preferably in the evening. In kidney disease a lower dose is used.

Your doctor may give you a different dose. Children's doses depend on weight.

Side effects

Common

  • mild drowsiness
  • tiredness
  • dry mouth
  • headache

Serious — get help

Stop taking it and see a doctor straight away if you notice:

  • severe allergic reaction (swelling of face or throat)
  • difficulty passing urine

Do not take it, or take care, if

  • Severe kidney disease
  • Allergy to levocetirizine, cetirizine or hydroxyzine
  • Avoid alcohol; be careful driving if it makes you sleepy

Interactions

No important interactions are listed in our database. Still tell your doctor or pharmacist everything you take.

Pregnancy

  1. A
  2. B
  3. C
  4. D
  5. X

Category B

No risk seen in animal studies, but there are few studies in pregnant women. Usually considered safe when needed.

Generic alternatives

Similar medicines your doctor or pharmacist may offer instead.

Cetirizine
No prescription needed
  • DesloratadineNo prescription needed
  • FexofenadineNo prescription needed
  • Check with my other medicines

    Always follow your doctor or pharmacistThis page is general information, not a prescription. Do not start, stop or change a medicine on your own.