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Quick summary

Type of medicine

Anti-histamine medication

Generic

Fexofenadine hydrochloride.

Active Ingredient

Fexofenadine hydrochloride.

Effective within

Usually one hour after taking the medication.

Works by

Fexofenadine functions by blocking the actions of histamine, a naturally occurring substance in the body and found in various foods. When the immune system detects foreign substances like pollen or dust, it releases histamine as a defense mechanism, leading to cellular expansion and swelling. However, this swelling triggers inflammation, causing symptoms such as congestion and hay fever. By inhibiting the effects of histamine, fexofenadine alleviates discomfort induced by pollen or other allergens.

Side effects

Drowsiness, nausea, and dizziness.

Medication details

Description

The Telfast patient leaflet provides comprehensive guidance on the usage, precautions, and potential side effects of the medication. It details Telfast's role as a non-drowsy antihistamine for treating hay fever symptoms in adults and adolescents aged 12 and above. The leaflet stresses the importance of adhering to medical advice, warns against usage in certain health conditions or allergies to its components, and advises on proper dosage and administration. Additionally, it highlights potential interactions with other medications and offers instructions for storage and disposal, ensuring safe and effective use for individuals prescribed Telfast.

Directions

The typical directions for using fexofenadine involve taking one tablet orally with water before a meal, once daily. It's essential to adhere to the prescribed dosage and avoid doubling doses if one is missed. If you have any questions about how to take fexofenadine, consult your doctor or pharmacist for guidance.






Ingredients

The ingredients in fexofenadine tablets typically include fexofenadine hydrochloride as the active substance, along with fillers, disintegrants, lubricants, and tablet coating materials.






Side Effects

headache
drowsiness
nausea
dry mouth
dizziness

Warnings

Caution should be exercised when using fexofenadine, particularly in individuals allergic to the medication or its components, those with liver or kidney problems, individuals with a history of heart disease, and pregnant or breastfeeding women. It's advisable to consult with a healthcare provider before using fexofenadine if you have any underlying medical conditions or are taking other medications.

Medically reviewed and published

  • This page was medically reviewed by Dr Sohaib Imtiaz, Clinical Lead on

How it works

Start a consultation for your condition, select a treatment option, and our in-house clinicians will review and prescribe if suitable. Expect your order within 1-3 working days.

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FAQs

Please read our FAQs page to find out more.

Can I take fexofenadine if I have liver or kidney problems?

It's important to consult your doctor before taking fexofenadine if you have liver or kidney issues. They can assess your condition and recommend the most suitable course of action.

Does fexofenadine cause drowsiness?

Fexofenadine is classified as a non-drowsy antihistamine, meaning it's less likely to cause drowsiness compared to older antihistamines. However, individual responses may vary, so it's advisable to be cautious until you know how it affects you.

Can I take fexofenadine if I'm pregnant or breastfeeding?

It's recommended to consult your healthcare provider before using fexofenadine if you are pregnant, planning to become pregnant, or breastfeeding. They can weigh the potential benefits against any potential risks and advise you accordingly.

How quickly does fexofenadine start to work?

Fexofenadine typically starts to relieve symptoms within one hour after taking the medication. However, individual responses may vary, and it may take longer for some people to experience relief.

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