Telfast (Fexofenadine Hydrochloride)

GP and surgeon, Dr Shane Charles (MBBS, MRCS, PgDip SEM) provides a simple explanation of the medication below:

'Telfast (Fexofenadine Hydrochloride) is an antihistamine medication used to manage symptoms of conditions like hay fever, hives of the skin and rhinitis. '.

If you think Telfast (Fexofenadine Hydrochloride) is a treatment that can help you, start an online consultation now for a registered prescriber to review. If treatment is deemed suitable, they can prescribe it, and we can deliver it to you from the comfort of your own home with a range of convenient delivery and payment options for you to choose from. If you have any questions about a medication, you should always consult your doctor with any questions prior to starting treatment, to ensure that it is safe and suitable for you.

How do I buy Telfast online?

You can safely buy Telfast online from UK Meds. Before your order is supplied, you will need to complete a quick online consultation with a registered independent prescriber. This ensures that Telfast is safe and suitable for your condition. Once approved, your medication will be delivered directly to your door in discreet packaging.

Can you get Telfast at Boots?

Telfast Boots

No, Telfast is not currently available at Boots in the UK. However, you can buy Telfast at UK Meds, where you may also benefit from discounts on larger orders.

What is Telfast?

Fexofenadine Hydrochloride

Telfast is a prescription antihistamine used to treat hay fever (seasonal allergic rhinitis) and long-term itchy rashes (urticaria). It is particularly effective for people who have not found relief with over-the-counter antihistamines.

The active ingredient in Telfast is fexofenadine hydrochloride, which works by blocking histamine, the chemical responsible for allergic reactions.

Telfast is:

• Used to treat hay fever in adults and children over six years old.
• Used to manage chronic itchy skin conditions (urticaria) in adults and adolescents over 12 years old.
• Only available on prescription in the UK—it cannot be bought over the counter.

Telfast can be used alongside a nasal spray or eye drops for additional relief.

How does Telfast work?

When you come into contact with allergens like pollen, your body releases histamine, which triggers allergy symptoms such as:

• Runny or blocked nose
• Sneezing
• Watery, itchy eyes
• Skin rashes and itching

Telfast works by blocking histamine receptors, preventing the inflammatory chain reaction that leads to these symptoms.

• It reduces hay fever symptoms by stopping histamine from affecting the nose, eyes, and airways.
• It relieves skin reactions, such as hives and rashes, by preventing histamine from inflaming the skin.
• It starts working within 30 to 60 minutes after taking a dose.

What are the benefits of using Telfast?

✅ Provides fast and effective relief from hay fever and allergic reactions
✅ Blocks histamine, stopping symptoms before they start
✅ Helps reduce itching, inflammation, and irritation in both nasal allergies and skin conditions
✅ Can be used alongside nasal sprays or eye drops for extra relief

If you experience persistent allergy symptoms, speak to your GP or pharmacist about whether Telfast is right for you.

Telfast Reviews

Read first hand what other UK Meds customers think about Telfast and it's impact on patients lives on our customer reviews above. For further context there are also a large selection of Telfast reviews describing what people think about their experiences with the medication available at Drugs.com and Web MD.

It is important to note that people may have different experiences when they use Telfast. If someone states that their medication did not work as they had hoped, it does not mean that it will not work for you. If you believe that it is the right medication for you then the best thing to do is to consult your doctor or healthcare professional, and judge the medication based on your own experiences if they recommend it as a treatment. Before starting a medication you should always consult with your healthcare provider first to ensure that it is safe and suitable for your individual needs.

For more information on the prescription medication patients should refer to the Telfast 120 and Telfast 180 patient information leaflet.

How do I use Telfast?

Always follow your doctor’s instructions when taking Telfast. The dosage may vary depending on whether you are treating hay fever (allergic rhinitis) or chronic hives (urticaria).

For Hay Fever (Allergic Rhinitis)

• Occasional symptoms – Your doctor may recommend taking Telfast only when needed, such as on days with a high pollen count.
• Persistent symptoms – If you experience hay fever frequently, your doctor may advise taking Telfast every day throughout the pollen season to prevent symptoms.

For Chronic Hives (Urticaria)

• Take one dose daily as prescribed by your doctor until your rash and itching improve.

How to Take Telfast Properly

• Swallow the tablet whole with water before eating a meal.
• Do not double your dose if you miss one—just take your next scheduled dose as usual.

For the best results, take Telfast regularly if your symptoms are persistent. If you are unsure about your dosage, speak to your GP or pharmacist.

What is the recommended dosage?

The correct Telfast dosage depends on age and the condition being treated. Always follow your doctor’s advice.

Telfast 120

• Children (6 to 11 years old): One 30 mg tablet twice daily (morning and evening).
• Adults & adolescents (12 years and older): One 120 mg tablet once daily.

Telfast 180

• Adults & adolescents (12 years and older): One 180 mg tablet once daily.

Telfast should be taken with water before food. If you are unsure about your dosage, speak to your GP or pharmacist for advice.

What warnings does it come with?

• Avoid fruit juice – Do not take fexofenadine with apple, orange, or grapefruit juice, as this can reduce how well the medicine works.
• Do not take fexofenadine if you are allergic to it.
• Speak to your doctor or pharmacist before taking fexofenadine if you have:
  • Kidney disease
  • Phenylketonuria (PKU) – Some versions of this medicine may contain phenylalanine.
  • Aged 65 or older – Older adults may be more sensitive to its effects.
• Pregnancy and breastfeeding – Ask your doctor before taking fexofenadine if you are pregnant or breastfeeding.

What side effects can Telfast have?

Like all medicines, fexofenadine may cause side effects.

Common Side Effects

These side effects are usually mild but speak to your doctor if they persist:

• Headache
• Back pain
• Cold symptoms – Stuffy nose, sinus pain, sore throat

Serious Side Effects – Seek Medical Help Immediately

Stop taking fexofenadine and get emergency medical attention if you experience:

• Severe allergic reaction – Symptoms include:
  • Hives
  • Difficulty breathing
  • Swelling of the face, lips, tongue, or throat
• Flu-like symptoms – Fever, chills, unusual tiredness
• New or worsening cough
• Severe pain
• Signs of an ear infection – Fever, ear pain, trouble hearing, ear drainage, irritability in children

This is not a full list of possible side effects. If you experience anything unusual, consult your GP or pharmacist for further advice.

• Fexofenadine - NHS
• Fexofenadine Hydrochloride - BNF
• Fexofenadine Tablets (Telfast, Allevia, Allegra) - Patient.info

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