Is a genuine non-sedating antihistamine indicated to relieve the symptoms of hayfever allergy, such as sneezing, itchy and runny nose, itchy throat and itchy and watery eyes. Once daily is a highly convenient dosing schedule and Telfast’s non-sedating character makes it ideal for environments where you don’t want to run the risk of being drowsy.

How does TELFAST work?

Fexofenadine belongs to a group of medicines called non-sedating antihistamines.
Histamine is a chemical produced by the body. It is stored in cells (mast cells) in almost all tissues of the body. When the body reacts to a foreign substance (an allergen e.g. flower pollen), the mast cells release their stores of histamine.

Histamine may then bind to receptors (H-1 receptors) in many areas of the body causing an increased blood flow to the area of the allergy and the release of other chemicals that add to the allergic response. This stimulates the symptoms of an allergic reaction such as inflammation of the skin, airways or tissues, rashes, itching of the skin, eyes or nose, nasal congestion or narrowing of the airways.

Fexofenadine acts by blocking the binding of histamine to receptors in the body. It does not prevent the actual release of histamine from mast cells. By blocking the binding of histamine, the release of other chemicals and increased blood supply to the area is prevented or decreased. This results in prevention or relief of the typical symptoms of an allergic reaction.

Histamine may be released from and act in a small (localised) area of the body e.g the nose. Alternatively, histamine can result in a serious or complete body reaction e.g. anaphylactic reaction. Fexofenadine (120mg) is only useful for the prevention or relief of localised or less serious allergies such as hay fever (rather than very serious allergic reactions).

Fexofenadine is called a non-sedating anti-histamine as it does not enter the brain in significant quantities and is therefore unlikely to cause drowsiness. However, drowsiness may very rarely occur.


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Medicines and their possible side effects can affect individual people in different ways. The following are some of the side effects that are known to be associated with this medicine. Because a side effect is stated here, it does not mean that all people using this medicine will experience that or any side effect.

Headache
Drowsiness
Nausea
Fatigue
Dizziness

The side effects listed above may not include all of the side effects reported by the drug's manufacturer.

For more information about any other possible risks associated with this medicine, please read the information provided with the medicine or consult your doctor or pharmacist.

Use TELFAST with caution in
Decreased kidney function
Decreased liver function
Elderly people

TELFAST Not to be used in
Breastfeeding
Children under 12 years of age
Pregnancy
This medicine should not be used if you are allergic to one or any of its ingredients. Please inform your doctor or pharmacist if you have previously experienced such an allergy.
If you feel you have experienced an allergic reaction, stop using this medicine and inform your doctor or pharmacist immediately.

Use TELFAST with caution in
Decreased kidney function
Decreased liver function
Elderly people

How can TELFAST affect other medicines?
The blood levels of fexofenadine may be increased by:

Erythromycin
and ketoconazole.
However, the increase in the blood levels of fexofendine does not normally result in increased side-effects.

The manufacturer advises allowing 2 hours between taking fexofenadine and antacids containing aluminium or magnesium. This is because antacids may decrease the absorption of fexofenadine from the gut.

Certain medicines should not be used during pregnancy or breastfeeding. However, other medicines may be safely used in pregnancy or breastfeeding providing the benefits to the mother outweigh the risks to the unborn baby.Always inform your doctor if you are pregnant or planning a pregnancy, before using any medicine. This medicine should not be used in pregnancy. Seek medical advice from your doctor. This medicine may pass into breast milk. It should not be used by breastfeeding mothers. Seek medical advice from your doctor.