Fexofenadine
Fexofenadine treats seasonal allergic rhinitis and chronic idiopathic urticaria in adults and children at licensed ages. It is the active form after terfenadine metabolism historically.
This medicine is part of the Blood pressure, cholesterol & related category.
Generic name: fexofenadine
Quick answers
Short replies to searches people often run before speaking to a clinician. For the overview of what the medicine is used for, see the short summary under the page title above.
What is it for?
Fexofenadine treats seasonal allergic rhinitis and chronic idiopathic urticaria in adults and children at licensed ages.
How long does it take to work?
Onset varies by condition and dose. Your GP or pharmacist can explain what to expect and when to review.
What are common side effects?
Headache, nausea, or dizziness occasionally.
Can you take paracetamol or ibuprofen with it?
Ask your GP or pharmacist before taking Fexofenadine with paracetamol or ibuprofen. Many adults use paracetamol for short periods when appropriate; NSAIDs such as ibuprofen need extra checks with your other medicines and health conditions.
More about what Fexofenadine is used for
Fexofenadine treats seasonal allergic rhinitis and chronic idiopathic urticaria in adults and children at licensed ages.
It is the active form after terfenadine metabolism historically.
How does Fexofenadine work, and how long does it take to work?
Selective peripheral H1 blockade with low sedation profile in most people at standard doses.
How and when should you take Fexofenadine?
Usually once or twice daily depending on strength — follow your leaflet.
Taking with apple, orange, or grapefruit juice can reduce absorption — water is preferable unless told otherwise.
What are the common side effects of Fexofenadine?
Headache, nausea, or dizziness occasionally.
Serious side effects of Fexofenadine — when to get urgent help
Seek help for severe allergic reaction to ingredients.
What if you miss a dose of Fexofenadine?
Take when remembered unless nearly time for next.
Who should not take Fexofenadine?
Severe kidney impairment may need dose adjustment.
Can you take paracetamol or ibuprofen with Fexofenadine? — other interactions
Ketoconazole and erythromycin historically raised older antihistamine levels; check product information for your dose with new medicines.
Fexofenadine in pregnancy and breastfeeding
Discuss with your prescriber before use.
Blood tests and monitoring on Fexofenadine
Symptom diary can help your GP judge effectiveness during pollen season.
What might your GP prescribe instead of Fexofenadine?
Cetirizine, Loratadine, or prescription nasal therapies may be used.
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Reviewed by UK registered pharmacists for accuracy and clarity. Content is informational only.
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Frequently asked questions about Fexofenadine
People also ask — common Google searches
- What is Fexofenadine used for?
- Fexofenadine treats seasonal allergic rhinitis and chronic idiopathic urticaria in adults and children at licensed ages. It is the active form after terfenadine metabolism historically.
- How long does Fexofenadine take to work?
- Onset varies by condition and dose. Your GP or pharmacist can explain what to expect and when to review. Always follow your prescriber’s follow-up plan.
- Can you take Fexofenadine with paracetamol or ibuprofen?
- Ask your GP or pharmacist before taking Fexofenadine with Paracetamol or Ibuprofen. Many adults use paracetamol for short periods when appropriate; NSAIDs such as ibuprofen need extra checks with your other medicines and health conditions.
- What are the side effects of Fexofenadine?
- Headache, nausea, or dizziness occasionally. See the sections below for more detail, including serious side effects and when to seek urgent help.
- Why avoid orange juice with fexofenadine?
- Some fruit juices reduce drug absorption in the gut — take tablets with water for predictable effect.
- Is fexofenadine the strongest antihistamine?
- Strength varies by dose and person; the ‘best’ choice is the one that controls symptoms with acceptable side effects for you.
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Often used with
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