This website has moved to a new location. Please visit our sister website healthexpress.co.uk for next day delivery.
  • Prescription included
  • Genuine medication
  • All-inclusive service - No hidden fees
  • Free next-day delivery
Home / Hay Fever / Fexofenadine (Telfast)

Fexofenadine (Telfast)

Buy Fexofenadine with discreet packaging and free shipping

  • Box of 30 Fexodenadine 120mg film-coated tablets for oral use
5 Our patients rate this 5 review
This product is currently not in stock. Please enter your e-mail address so that we can inform you as soon as this medication is available again.
trustpilot

4.7 Excellent

14,509 Patient reviews

What is Fexofenadine?

Fexofenadine is a fast-acting non-drowsy antihistamine that helps with the symptoms of hay fever and seasonal allergic rhinitis.

It works by blocking the immune response, which prevents symptoms of hay fever such as sneezing; a blocked or runny nose; itchy, red or watery eyes and an itchy throat.

Fexofenadine was first approved by the European Medicines Agency (EMA) in the 1990s. It is used to treat a range of conditions including:

  • hay fever
  • hives (urticaria)
  • reactions to insect bites and stings
  • some food allergies

Are Fexofenadine and Telfast the same?

Yes, Fexofenadine hydrochloride is the active ingredient in brands such as Telfast, Allegra, Almerg, Allevia and Treathay. It is also sold under the generic name ‘Fexofenadine’, which is the active ingredient.

Both branded and generic medicines contain the same active ingredient; however, the other added ingredients may be different. Generic medicines are also often a lot cheaper than branded medicines.

You can purchase Fexofenadine 120mg tablets online at euroClinix after completing an online consultation for hay fever.

How does Fexofenadine work?

Fexofenadine is an antihistamine. It works by blocking the action of a chemical called histamine in your body.

During an allergic reaction, an allergen such as pollen, dust mites, or pet dander, enters your body through your nose, eyes or mouth. Your body detects it and mistakes it for a harmful substance.

In response, an immune reaction is triggered and the body produces the chemical histamine. This chemical causes inflammation in the body and leads to allergy symptoms such as watery eyes, a runny nose, sneezing, and itching.

Fexofenadine binds to histamine receptors and blocks the effects of histamine, which reduces allergy symptoms.

What are the benefits of taking Fexofenadine?

There are many benefits of taking this medicine to treat hay fever, for example:

Key benefits of Fexofenadine

Image 1

Non-drowsy

Unlike other antihistamines, this medicine is less likely to cause drowsiness, making it a great option for people who need to stay alert during the day.

Image 2

Fast acting

This medicine starts working as early as 1 hour after taking a dose, providing quick relief from symptoms.

Image 3

Long-lasting relief

Fexofenadine provides relief of hay fever symptoms for up to 24 hours. This means it only needs to be taken once a day.

Image 4

Effective for skin reactions

It is also effective for treating skin reactions such as itching, swelling and rashes.

How effective is Fexofenadine?

Research has shown that Fexofenadine is an effective treatment for hay fever.

One study compared the effectiveness of Fexofenadine in the treatment of seasonal allergic rhinitis. 821 patients were randomised to receive either Fexofenadine 120mg, Fexofenadine 180mg, Cetirizine 10mg, or a placebo once daily for 2 weeks.

The results showed that both doses of Fexofenadine were more effective in reducing symptoms such as sneezing, a runny nose, an itchy nose, throat, or palate, and itchy, watery, or red eyes compared to the placebo.

There was no significant difference in effectiveness between the two doses of Fexofenadine, or between Fexofenadine and Cetirizine. However, patients experienced more drowsiness and fatigue with Cetirizine compared to Fexofenadine.

Who can and cannot take it?

Most people can take this tablet to treat hay fever symptoms. However, it may not be suitable for everyone.

Who can take this medicine?

Fexofenadine is suitable for most adults who need to treat hay fever or hives.

Who cannot take this medicine?

You should not take Fexofenadine if you are allergic to the active ingredient or any other added ingredients in this medication.

You must also talk to your doctor before taking this medicine if you:

  • have problems with your liver or kidneys
  • have, or have had heart problems
  • are elderly

If this medicine is not suitable for you, other hay fever treatments are available at euroClinix.

What lifestyle changes should I make while taking Fexofenadine?

It’s important to make certain lifestyle changes to manage your hay fever alongside this treatment. Some changes include:

Lifestyle guide for Fexofenadine users

Image 1

Avoid allergy triggers

If pollen triggers your symptoms, keep your windows shut during high pollen seasons, avoid drying laundry outside, and bringing flowers into your home. For dust allergies, wash your bedding, and vacuum regularly. To reduce pet allergies, keep your pets out of bedrooms and wash your hands after touching them.

Image 2

Stay hydrated

Drinking a lot of water can help by thinning the mucus in the nasal passages, leading to less nasal congestion.

Image 3

Use air filters

Use a HEPA filter in your home air purifier and vacuum cleaner, and consider fitting a pollen filter in your car.

Image 4

Limit time outdoors

Check the pollen levels each day before going outdoors. Try to limit your time spent outdoors during high pollen seasons. Avoid tasks like gardening and mowing the lawn, and make sure to shower and change your clothes after you have been outside to wash pollen off.

Image 5

Use a nasal rinse

A saline spray or rinse can help to remove allergens from your nasal passages. This may help to reduce symptoms like nasal congestion and sneezing.

In addition to using antihistamines, try changing to a low-histamine diet. This involves reducing or eliminating foods that are high in histamine. The most important foods to avoid include tinned fish (e.g. tuna, or sardines), hard, matured cheeses (e.g. parmesan), smoked or cured meats, alcohol, and pickled or fermented foods.

Silvia Fonda Nutritionist

What are Fexofenadine’s side effects?

As with all prescription medicines, there is a risk of experiencing side effects, although not everybody gets them. The most common side effects tend to be mild and should disappear on their own.

Common side effects

Common side effects of Fexofenadine are reported to affect up to 1 in 10 people and include:
  • headache
  • drowsiness
  • nausea
  • dizziness

Uncommon side effects

Feeling tired or sleepy when taking this medicine is uncommon and only may affect up to 1 in 100 patients.

Rare side effects

An allergic reaction can be rare but serious. Stop taking this medication and seek emergency medical attention if you experience the following signs of an allergic reaction:
  • skin rash and itching
  • hives
  • swelling of the face, lips, tongue or throat
  • flushing
  • chest tightness
  • trouble breathing

Side effects with unknown frequency

Other side effects that may occur when taking this medicine include:

  • trouble sleeping, sleeping disorders, or bad dreams
  • feeling nervous
  • a fast or irregular heart beat
  • diarrhoea
  • blurred vision

If your symptoms do not go away or worsen, speak to your doctor.

For the full list of side effects, please refer to the patient information leaflet.

How can I manage the side effects?

Some common side effects of this medicine can be managed at home. Find some helpful management tips below:

Common side effects How to manage them

Headache

Rest and drink plenty of fluids. It's best to avoid alcohol. Consider taking a painkiller such as paracetamol, if recommended by your doctor.

Drowsiness

Speak to your doctor as they may suggest trying a different non-drowsy antihistamine.

Feeling sick

Stick to simple, bland foods and avoid eating rich or spicy food.

Dizziness

Try lying down until the feeling passes, then get up slowly.
If the dizzy feeling does not improve within a couple of days, speak to your doctor or pharmacist.

Does Fexofenadine interact with any other medicines?

Tell your doctor if you are taking, or have recently taken any other medicines. This includes medicines you buy with or without a prescription, natural supplements, or herbal remedies. This is because Fexofenadine can affect the way these medicines work and vice versa.

Some drug interactions include:

  • ketoconazole (for fungal infections)
  • antibiotics (e.g. erythromycin, rifampicin)
  • indigestion medicines containing magnesium or aluminium (leave at least 2 hours in between taking these treatments)
  • apalutamide (for prostate cancer)
  • filgotinib or leflunomide (for arthritis)
  • teriflunomide (for multiple sclerosis)
  • some medicines used to treat hepatitis C (e.g. velpatasvir)
  • other antihistamines (e.g. cetirizine, levocetirizine, loratadine, desloratadine)
  • dronedarone (to control your heart rate)

You should avoid drinking some fruit juices, such as grapefruit juice whilst on Fexofenadine. This may make this medicine less effective in treating your symptoms.

Dr. Caroline Fontana Lead Prescribing Doctor

This is not a complete list of possible interactions. For a full list, refer to the BNF interaction checker.

What safety advice should be followed when taking Fexofenadine?

For more information, refer to the safety information table below:

Category Status Advice
Alcohol Use with caution Limit drinking alcohol while you are taking this medicine as alcohol may increase your chance of experiencing side effects such as sleepiness.
Pregnancy Avoid If you are pregnant or think you may be pregnant, ask your doctor for advice before taking this medicine. Fexofenadine should not be used during pregnancy unless necessary.
Breastfeeding Avoid This medicine is not recommended during breastfeeding as it may pass into breast milk.
Driving Use with caution It is unlikely that these tablets will affect your ability to drive or use machines. However, if you feel sleepy or dizzy, avoid these actions.

How should I store and dispose of this medicine?

How to store

Keep this medicine in its original packaging, out of the sight and reach of children. Store it at room temperature (around 25°C).

Disposal

Do not use this medicine after the expiry date stated on the pack. To throw away any expired or unused medication, take it to your nearest pharmacy. Do not throw away medicines in your household waste or flush them down the toilet, as this may harm the environment.

Can I buy Fexofenadine without a prescription?

Fexofenadine 120mg can be purchased over the counter in most pharmacies. You can also buy Fexofenadine online at euroClinix. All you have to do is fill out a quick medical questionnaire that will be reviewed by one of our registered doctors.

Once approved for treatment, your medicine will be dispensed and delivered to your address the following day.

How can I buy Fexofenadine online from euroClinix?

To buy Fexofenadine online from euroClinix, follow these simple steps:

  1. Complete a quick online consultation to check your eligibility.
  2. UK-registered doctors review your responses to ensure the medication is right for you.
  3. Upon approval, an e-prescription will be issued.
  4. Enjoy free delivery from our licensed pharmacy with tracking details.

Your privacy is our top priority. euroClinix uses secure, encrypted transactions and complies with UK’s medical standards to keep your information confidential.

Start your online consultation today to enjoy professional care from the comfort of your home.

Why should I choose euroClinix?

euroClinix is trusted by thousands of users in the UK for its safe and convenient service. Here’s why:

  • Experienced doctors manage your consultations and prescriptions.
  • Online consultations, quick approvals, and discreet doorstep delivery add to the convenience.
  • A supportive team is on hand to answer treatment-related questions or concerns.
  • Patients can manage their prescriptions hassle-free through our secure platform.

Join thousands who trust euroClinix for their healthcare needs and take control of your health today.

How much is Fexofenadine?

The price of Fexofenadine at euroClinix includes everything you need:

  • Free online consultation with our experienced doctors
  • Free prescription, if approved
  • Free delivery straight to your door

Our pricing is transparent, with no hidden fees. Order today and benefit from our complete, all-inclusive service.

What alternatives are available?

If this medicine is not right for you, there are other options available to treat hay fever. Some alternative nasal sprays can be found in the table below:

Comparison of hay fever treatments
Choose what to compare:
Medicine name Available dosages Form Works in Best for Price from
Fexofenadine 30mg, 120mg, 180mg Tablets 1 hour Non-drowsy relief, daily use, strong allergy symptoms -
Avamys 27.5mg Nasal spray 8 - 24 hours Once-daily treatment for seasonal or year-round allergies -
Dymista 137mcg/50mcg Nasal spray As early as 5 minutes Faster relief for more severe symptoms -

Speak to your doctor about which of these options best suits your needs.

Fexofenadine (Telfast) FAQs

Can I take Cetirizine and Fexofenadine together​?
Is it safe to take this medicine for a long time?
How much antihistamine can I take in 24 hours?
Can you overdose on Fexofenadine​?
Can Fexofenadine cause weight gain?​
Does Fexofenadine make you drowsy​?
Is it safe to order Fexofenadine online?
Are there any discounts for being a new user?
Will my order be confidential?
What are the delivery options available?

Note: You must complete a short online consultation so that our doctor can ensure that the treatment is suitable for you. The above pricing should only be used as a reference. The final decision to issue this treatment lies with the prescribing doctor.

Medically reviewed by Dr. Caroline Fontana Written by our editorial team Last reviewed 15-04-2025
Fexofenadine (Telfast) information
Type of medicine Antihistamine
Used for Hay fever
Active ingredient(s) Fexofenadine hydrochloride
Works by Blocking the action of the chemical histamine in your body.
Effective within 1 hour
Available as Tablets
Available dosage(s) 120mg
Usage Take one tablet once daily
Manufacturer Various
Branded available No
Storage Keep this medicine in its original packaging, and store at room temperature.
Prescription required? Yes, get it FREE with our online consultation
Who is suitable for an online consultation* Adults with hay fever

*Note: Our medical team must review your online consultation before approving this treatment. They will determine if the requested treatment and quantity are safe, appropriate, and effective for you.

Fexofenadine (Telfast) reviews
Box of 30 Fexodenadine 120mg film-coated tablets for oral use Excellent 5 2 patients have reviewed Fexofenadine (Telfast) on Trustpilot
  • Select
    medication

  • Fill out a short
    medical form

  • Doctor issues
    prescription

  • Medication sent
    from pharmacy

Our Patients Love
  • Reachable and friendly customer serviceCustomer service online now: Mon-Fri 08:00 - 17:00
  • All-inclusive service - No hidden feesAll prices include shipping & prescription
  • Next day deliveryFor all orders before 16:30