3. Fexofenadine

Fexofenadine

  • Fexofenadine is used to treat the symptoms of allergies.
  • It is called a non-drowsy antihistamine, however it can still cause drowsiness in a few people. Make sure your reactions are normal before driving, operating machinery or doing any other jobs which could be dangerous if you were not fully alert. If you drink alcohol, do so only in moderation, and be aware of its effects on you.
Type of medicine Antihistamine (non-drowsy)
Used for Allergies such as hayfever and some allergic skin reactions
Also called Telfast®
Available as Tablets

Exposure to substances such as pollen, pet fur, house dust or insect bites can cause the body to produce a chemical called histamine. The release of histamine causes allergic symptoms which can include rashes, sneezing, watery eyes and a runny or blocked nose.

Fexofenadine stops the effects of histamine and helps to relieve these symptoms.

Before taking fexofenadine make sure your doctor or pharmacist knows:

  • If you are pregnant, trying for a baby or breast-feeding.
  • If you have epilepsy.
  • If you have liver, kidney or heart problems.
  • If you are taking other medicines, including those available to buy without a prescription, herbal and complementary medicines.
  • If you have ever had an allergic reaction to an antihistamine or to any other medicine.
  • Before starting this treatment, read the manufacturer's printed information leaflet from inside the pack.
  • Take fexofenadine tablets exactly as your doctor has told you.
  • Swallow the tablets with a drink of water.
  • Do not take indigestion remedies 2 hours before or after you take this medicine. This is because they may reduce the amount of fexofenadine your body absorbs.
  • If you forget to take a dose, take it as soon as you remember unless it is nearly time for your next dose, in which case leave out the missed dose. Do not take two doses together to make up for a forgotten dose.
  • Fexofenadine is called a non-drowsy antihistamine, however it can sometimes cause drowsiness in some people. If you feel sleepy, do not drive or use tools or machines.
  • If you drink alcohol while you are taking fexofenadine, be aware of its effects on you and do not drink more than moderate amounts.

Along with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. These usually improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist if any of the following side-effects continue or become troublesome.

Common side-effects - these affect less than 1 in 10 people who take this medicine What can I do if I experience this
Headache Ask your pharmacist to recommend a suitable painkiller. If the headache continues, speak with your doctor
Drowsiness, dizziness If this happens, do not drive or use tools or machines
Feeling sick Stick to simple foods and avoid spicy foods

If you experience any other symptoms which you think may be due to this medicine, discuss them with your doctor or pharmacist.

  • Keep all medicines out of the reach and sight of children.
  • Store in a cool, dry place, away from direct heat and light.

  • If you buy any medicines check with a pharmacist that they are safe to take with your other medicines.
  • Never take more than the prescribed dose. If you suspect that you or someone else has taken an overdose of this medicine go to the accident and emergency department of your local hospital at once. Take the container with you, even if it is empty.
  • If you are having an operation or any dental treatment, tell the person carrying out the treatment which medicines you are taking.
  • This medicine is for you. Never give it to other people even if their condition appears to be the same as yours.
  • Never keep out of date or unwanted medicines. Take them to your local pharmacy which will dispose of them for you.
  • If you have any questions about this medicine ask your pharmacist.
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Further reading & references

  • British National Formulary; 62nd Edition (Sep 2011) British Medical Association and Royal Pharmaceutical Society of Great Britain, London
  • Manufacturer's PIL, Telfast® 120 mg Film coated tablets,; Manufacturer's PIL, Telfast® 120 mg Film coated tablets, sanofi-aventis, electronic Medicines Compendium. Dated December 2010.
Original Author: Helen Allen Current Version:
Last Checked: 07/06/2011 Document ID: 3782  Version: 23 © EMIS

Disclaimer: This article is for information only and should not be used for the diagnosis or treatment of medical conditions. EMIS has used all reasonable care in compiling the information but make no warranty as to its accuracy. Consult a doctor or other health care professional for diagnosis and treatment of medical conditions. For details see our conditions.

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