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Treathay Fexofenadine 120mg - 30 Tablets - 3 Packs

Based on 18 reviews
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RRP  £20.97
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Faye Bonnell - Medical Content Writer
Faye Bonnell
Medical Content Writer
James O'Loan - CEO & Superintendent Pharmacist
James O'Loan
CEO & Superintendent Pharmacist

What is Treathay? 

Treathay is a hay fever treatment containing 120mg of the non-drowsy antihistamine fexofenadine hydrochloride. It can be used by adults and children over the age of 12 years to relieve symptoms of hay fever, such as sneezing, runny nose and itchy eyes. 

What is the recommended dosage?

Always take this product exactly as described in the patient information leaflet or as your doctor / Chemist4U pharmacist has told you. For adults and children aged 12 years and over, take one tablet daily with water before a meal. This medicine should start to take effect within 1 hour and lasts for 24 hours.

How does fexofenadine relieve the symptoms of hay fever? 

Fexofenadine is a non-drowsy medicine known as an antihistamine. When you come into contact with something you’re allergic to, such as pollen, your body produces a substance called histamine, causing watery eyes and itchy skin to name just a few symptoms. Fenofexadine works by blocking the effects of histamine to reduce any unpleasant symptoms.

What is hay fever?

Hay fever refers to an allergy to pollen, and there many different types, like tree, grass and plantain pollen. Pollen particles swarm the air all year round, but it typically worsens when it’s warm, humid and windy between the months of March and September.

It presents symptoms similar to the common cold, however, hay fever can last for weeks and months at a time. If you suffer from asthma, hay fever may trouble you more, so always speak to your doctor or Chemist4U pharmacist for advice if you’re struggling.

Is Treathay suitable for children? 

Treathay is suitable for children aged 12 years and over. If you’re looking for a hay fever treatment for a child under the age of 12, you should speak to your doctor or Chemist4U pharmacist for advice on alternative treatment options.

Is Treathay suitable for pregnant and breastfeeding women? 

Treathay should not be taken during pregnancy or breastfeeding unless advised by a medical professional to do so. If you are pregnant or breastfeeding, think you may be pregnant or are planning to have a baby, you must ask your doctor or Chemist4U pharmacist for advice before taking any new medicine. 

Does fexofenadine cause drowsiness? 

Fexofenadine is a non-drowsy antihistamine, so it’s unlikely to cause drowsiness. But if you do feel sleepy or dizzy after taking this medicine, do not drive or operate machinery until you feel better.

When should this product not be used? 

Treathay may be unsuitable for certain people. Do not take these tablets if you are allergic to fexofenadine or any of the other listed ingredients. Talk to your doctor or Chemist4U pharmacist before taking this medicine if you:

  • Have problems with your liver or kidneys

  • Have or ever had heart disease, since this kind of medicine may lead to a fast or irregular heartbeat

  • Are elderly

Indigestion remedies containing aluminium and magnesium may affect the absorption of Treathay. You should leave 2 hours between taking Treathay and your indigestion remedy.

Are there any side effects? 

Like all medicines, Treathay may cause side effects in some people, but these won’t affect everybody. Seek emergency medical attention if you notice any signs of a severe allergic reaction, symptoms of which include swelling of the face and throat, skin rash, breathing difficulties and/or loss of consciousness. Common side effects include: 

  • Headache

  • Drowsiness

  • Nausea

  • Dizziness

For more information on potential side effects, refer to the patient information leaflet. If you experience any side effects, including any not included in the patient information leaflet, you can report them using the MHRA Yellow Card Scheme.

Storage information

Store in a cool, dry place out of sight and reach of children. Do not use after the expiry date, referring to the last day of the month stated on the packaging.  Do not throw away any medicines via wastewater or household waste.

Important information

This product is a medicine; make sure to speak to your doctor or Chemist4U pharmacist before taking this product if you have an underlying medical problem or are taking any other medicine or complementary therapy. If your symptoms get worse or continue after taking this product, contact us or your doctor. For medical services in your area, please refer to

If you are pregnant, trying to become pregnant, or breastfeeding, speak to your doctor or our pharmacist before taking this product. If you suffer from any allergies, ask your doctor or our pharmacist if this medicine is right for you.

Store all medicines out of sight and reach of children.

Please read the included leaflet carefully before using this product.

Please contact your GP if appropriate regarding this product.

Helpful Advice on Medication Restrictions & Addiction

For further information on our medication restrictions policy, please click here.

If you are concerned about addiction to 'over the counter' medication, we urge you to visit the below links for professional help and advice:

NHS Help & Advice on Drug Addiction

Talk To Frank - Drug Addiction Help & Support

Treathay Fexofenadine 120mg - 30 Tablets - 3 Packs Reviews

By John M Pirie,
March 20, 2024
Does what it says at a great price can’t get through the season’s without it
By Miss Nicola K Neil,
March 05, 2024
Product works fast
By Wendy,
November 14, 2023
Having used Loratadine and Cetirizine for years with limited success. I started using the ‘expensive’ brand of these tablets when they first became available without a prescription. After I found that Fexofenadine worked really well for me, I transferred to buying Treathay as they were appreciably cheaper especially from Chemist4U as I buy 3 packs at a time.
By Tony,
August 15, 2023
Great product, superb value
By Nikash Tariq,
August 15, 2023
Best price available and the best over the counter antihistamines IMO

Advice & Guides

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