What is Fexofenadine? 

Fexofenadine is a non-sedating antihistamine used to relieve symptoms caused by allergic reactions. It works by blocking histamine (H1) receptors, helping to reduce symptoms such as sneezing, itching and watery eyes that occur during allergic responses. It is commonly used in the UK to treat hay fever (seasonal allergic rhinitis) and chronic idiopathic urticaria (hives). 

What Fexofenadine is used for?

Fexofenadine is used to treat symptoms of allergic conditions, including:

• Seasonal allergic rhinitis (hay fever)
• Perennial allergic rhinitis
• Chronic idiopathic urticaria (hives)

What symptoms can Fexofenadine treat?

It can help relieve symptoms such as:

• Sneezing
• Runny or blocked nose
• Itchy nose or throat
• Red, itchy or watery eyes
• Raised itchy rash or hives

These symptoms occur when the body releases histamine in response to allergens such as pollen, dust mites or animal dander.

How does Fexofenadine work?

Fexofenadine belongs to a group of medicines called second-generation antihistamines.

During an allergic reaction, the body releases histamine, which binds to H1 receptors and causes inflammation, itching and swelling. Fexofenadine blocks these receptors, preventing histamine from triggering allergy symptoms.

Unlike older antihistamines, it does not easily cross the blood–brain barrier, which is why it is less likely to cause drowsiness.