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Fexofenadine is an antihistamine that relieves allergy symptoms, such as hay fever, hives and insect bite reactions.
What should I know about Fexofenadine?
Avoid grapefruit, apple and orange juice with it, as it may not work as well.
What are the side effects?
Headaches, sleepiness, feeling sick and dizziness can occur. Do not drive if you feel sleepy or dizzy.
Who should check first?
Ask your pharmacist if you have a medical condition or take other medicines.
When should I get help?
See a doctor if symptoms do not improve. Call your local emergency number (000 in Australia) for swelling of the throat or tongue, or trouble breathing.
Doses vary, so follow your prescriber, pharmacist and the medicine label. In Australia, call 000 in an emergency. Outside Australia, use your local emergency number.
Source: NHS: About fexofenadine. General education does not replace individual medical advice. Updated November 2026.
Explore our health guides and medicine FAQs. Medicine availability and product instructions vary by country; follow the leaflet supplied with your medicine.