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Allergy medicines (antihistamines)

Fexofenadine

Also sold as: Telfast, Allegra

No prescription neededAllergy medicines (antihistamines)
Comes as:TabletSuspension

Usual adult dose

Usual adult dose: 120 mg once a day for hay fever, or 180 mg once a day for hives. Take with water, not with fruit juice.

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

Side effects

Common

  • headache
  • dizziness
  • nausea
  • tiredness

Serious — get help

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

  • severe allergic reaction (swelling of face or throat)
  • fast heartbeat

Do not take it, or take care, if

  • Allergy to fexofenadine
  • Severe kidney disease (dose may need to be lower)

Interactions

Medicines that can react with this one.

Moderate1 medicineTake together only with care. Ask your doctor or pharmacist.
  • Aluminium hydroxide + Magnesium hydroxide

    Antacids reduce absorption of fexofenadine; take them at least 2 hours apart.

Minor1 medicineUsually not a problem, but tell your doctor.
  • Erythromycin

    Erythromycin can raise fexofenadine levels slightly.

Pregnancy

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

Category C

A risk to the baby cannot be ruled out. Use only if your doctor says the benefit is greater than the risk.

Generic alternatives

Similar medicines your doctor or pharmacist may offer instead.

  • CetirizineNo prescription needed
  • LoratadineNo prescription needed
  • DesloratadineNo prescription needed
  • LevocetirizineNo 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.