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Fexofenadine

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Fexofenadine

Fexofenadine tablets are a non-drowsy antihistamine used to treat allergic-type symptoms such as a runny nose, itching and sneezing. The non-drowsy medicine is effective for hay fever, itchy skin (hives), and other allergy-related symptoms. It works by preventing the body from producing histamine, which, in turn, controls the allergic response the patient has. It's suitable for adults and children aged 12 and above and contains fexofenadine hydrochloride.

  • Cheaper version of Telfast
  • Treatment for symptoms of hay fever and other allergies
  • Fexofenadine tablets are non-drowsy

Buy Fexofenadine Online

Fexofenadine, an antihistamine sold under the brand name Telfast, blocks the receptors in the body that cause allergic reaction-like symptoms, reducing the symptoms of hay fever.

With two strengths available, the medication can effectively relieve allergy symptoms, helping you continue with your day.

When to use Fexofenadine tablets

Fexofenadine is a popular and effective medication for the following:

  • Hives: Fexofenadine 180mg is used to relieve the symptoms of long-term hives (chronic idiopathic urticaria), which are raised red welts that can cause itching, swelling and significant discomfort.
  • Hay fever: Fexofenadine 120mg is used to relieve the symptoms of seasonal allergic rhinitis, which occurs when the immune system reacts to high pollen levels. It can cause congestion, runny nose, sore throat, sneezing and sensitive eyes, but the antihistamine can support these symptoms.

While taking Fexofenadine can reduce symptoms, it's not an allergy cure.

Age Restrictions:

Fexofenadine tablets are only for adults and children aged 12 and over, and are not suitable for children under 12. Adults and children aged 12 and over can take 120mg. You'll need a prescription if you want the maximum dose of 180mg.

How to Take Fexofenadine Tablets

When using Fexofenadine tablets, always read the instructions and follow advice from your doctor or pharmacist. It's also vital to take the recommended dose and never exceed it. Here are some best practices for using Fexofenadine:

  • Take it once daily and follow your doctor's advice as to when you use it. Swallow the tablet whole with a full glass of water. Avoid crushing, chewing, or breaking the tablet.
  • Take Fexofenadine at the same time every day to ensure a consistent level of the medication in your system.
  • If you miss a dose, take it as soon as you remember or skip the dose and take the next one as normal.
  • Continue using Fexofenadine hydrochloride for the duration prescribed by your doctor, even if your symptoms improve.

When to Avoid Using Fexofenadine

Do not take Fexofenadine tablets if you:

  • Are sensitive or allergic to any of the listed ingredients.

Talk to your doctor or pharmacist before taking Fexofenadine tablets if you:

  • Have problems with your liver or kidneys.
  • Are pregnant or breastfeeding. Do not take Fexofenadine if you are pregnant, unless necessary. It is not recommended during breastfeeding.
  • Are elderly.

Precautions

While most people are fine to take Fexofenadine, there are some potential risks to be aware of. Indigestion remedies containing aluminium and magnesium can lower the amount of fexofenadine absorbed, so leave about 2 hours between taking Fexofenadine and your indigestion remedy. Apalutamide (a medicine to treat prostate cancer) may reduce the effect of fexofenadine.

If you have or have ever had heart disease, speak to your doctor first, as this kind of medicine may lead to a fast or irregular heartbeat.

Ingredients:

Fexofenadine hydrochloride is the active ingredient in this antihistamine, and it helps relieve allergy and hay fever symptoms.

Other ingredients include:

  • Hypromellose
  • Titanium dioxide
  • Iron oxides (for colouring)
  • Microcrystalline cellulose
  • Croscarmellose sodium
  • Maize starch
  • Titanium dioxide
  • Iron oxides (for colouring)
  • Macrogol (polyethylene glycol)

There is always a risk of side effects with all medications, such as Fexofenadine hydrochloride tablets, to ease hay fever symptoms. Some of these can be quite mild and can subside over time. Others are more serious and should be reported to your GP right away if you experience any side effects. Please contact a member of our team if you are concerned about any potential side effects from taking Fexofenadine tablets.

Common side effects (may affect up to 1 in 10 people) of Fexofenadine hydrochloride tablets include:

  • Headache
  • Drowsiness
  • Feeling sick (nausea)
  • Dizziness

Uncommon side effects (may affect up to 1 in 100 people) include tiredness and sleepiness. Other side effects (frequency not known) include difficulty sleeping, sleep disorders, nervousness, blurred vision and a fast or irregular heartbeat.

Stop taking Fexofenadine and tell your doctor immediately if you get swelling of the face, lips, tongue or throat, flushing, chest tightness or difficulty breathing, as these may be signs of a serious allergic reaction.

Can I drink alcohol with Fexofenadine tablets to ease hay fever symptoms?

Alcohol can increase the potential side effects associated with Fexofenadine, including drowsiness, so it's best to avoid it.

Can I use Fexofenadine tablets if I am pregnant?

Do not take Fexofenadine tablets if you are pregnant, unless necessary. If you are pregnant, think you may be pregnant or are planning to have a baby, ask your doctor or pharmacist for advice before taking this medicine.

Can I use Fexofenadine tablets with other hay fever relief?

If you're using eye drops or nasal spray, it should be safe to use Fexofenadine hydrochloride tablets. However, you should never combine oral antihistamines, as it can cause an overdose.

Can Fexofenadine cause drowsiness?

While Fexofenadine is technically a non-drowsy antihistamine, there's still a chance of experiencing drowsiness. If you notice that the medicine is making you feel drowsy, it's important to avoid driving and operating machinery.

Can Children Take Fexofenadine?

Fexofenadine tablets are only for adults and children aged 12 and over. They are not suitable for children under 12. Please ask a registered pharmacist or consult your doctor if you're unsure.

How Long Does It Take for Fexofenadine to Work?

Medicines containing the active ingredient Fexofenadine usually begin to work within one hour of being taken. However, reducing allergy and hay fever symptoms might take a few days.

Can I Take Fexofenadine Daily?

Yes, Fexofenadine is usually taken once a day. However, the dosing frequency should follow your doctor’s specific instructions.

Can Fexofenadine Treat Asthma?

No, Fexofenadine isn't an asthma treatment, and you should use the inhalers provided by your doctor.

How Should I Store Fexofenadine?

Please store the antihistamine in a cool and dry place, away from moisture and light. Please also make sure that children and pets can't access the tablets.

Can I Split or Crush Fexofenadine Tablets?

No, you shouldn't split or crush fexofenadine tablets. Please swallow them whole with a glass of water.

What Should I Do if I Overdose on Fexofenadine?

If you take too many Fexofenadine tablets, please seek immediate medical attention, as there could be long-term side effects.

Leaflets

Before you buy Fexofenadine online, regardless of whether they are over-the-counter or prescription-only, it is essential always to read the patient information leaflet.

Patient Information Leaflet

Umar Razzaq, MPharm | University of Strathclyde, Clinical Pharmacist.
Content Written by:Umar RazzaqMPharm | GPhC Reg: 2064448 | University Of Strathclyde
Date Written:12/06/2026
Role:Clinical Pharmacist
Nish Fayyaz, MPharm | University of Strathclyde, Pharmacist.
Medically Reviewed By:Nish FayyazMPharm | GPhC Reg: 2225257 | University Of Strathclyde
Date Checked:12/06/2026
Role:Pharmacist
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