Fexofenadine
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Molecule Summary
| Uses | Allergic Rhinitis, Urticaria |
| Therapy | Anti-Allergic |
| Side Effects | Dizziness, Drowsiness, Headache, Nausea |
Assurance
available
Regulated
Molecule Description
Fexofenadine is a second-generation antihistamine used to treat various allergies. It acts as a highly selective antagonist of the H1 histamine receptor. This means it blocks histamine, a key chemical released by the body during an allergic reaction, from binding to its receptors. By inhibiting this process, Fexofenadine prevents histamine from causing common allergic symptoms such as sneezing, nasal congestion, a runny nose, itchy or watery eyes, and skin reactions like hives (urticaria), redness, and swelling. It is non-sedating in nature. Unlike older antihistamines, it does not easily cross the blood-brain barrier (BBB). This ensures that it relieves allergy symptoms without causing significant drowsiness, making it suitable for daytime use and helping maintain alertness. Fexofenadine is commonly prescribed to treat symptoms of Seasonal Allergic Rhinitis (hay fever), Perennial Allergic Rhinitis, and Chronic Idiopathic Urticaria (long-lasting hives). It is available in oral forms, including film-coated tablets and oral suspensions.
Uses
Fexofenadine is used to treat allergic rhinitis, symptoms include watery eyes, runny or blocked nose, itching and sneezing. It is also used to relieve symptoms of skin allergy (urticaria or hives).
Contraindications
When should one not use Fexofenadine
If you are allergic to fexofenadine.
Side effects
Common side effects of this drug are:
- Nausea
- Headache
- Drowsiness
- Dizziness
Precautions and Warnings
Pregnancy
Breast Feeding
Driving
Alcohol
Other General Warnings
Talk to your doctor if
- You are suffering from liver or kidney disease.
- You are suffering from any heart disease as this medicine is known to increase your heartbeat.
- You are an elderly person.
- Fexofenadine should not be used by children below the age of 12 unless prescribed by their doctor.
Mode of Action
How Does It Work?
Fexofenadine blocks the release of natural substance histamine responsible for various allergic conditions. Thus, helps relieve symptoms of allergic conditions.
Interactions
Interactions with other medicines
- Some medicines can affect the way Fexofenadine works or this medicine itself can reduce the effectiveness of other medicines taken at the same time.
- Tell your doctor about all the medicines, supplements or herbals you are currently taking or might take to avoid any possible interaction.
- Especially, if you are taking medicines such as ketoconazole and erythromycin to treat infections.
- Acidity medicines should be taken two hours before this medicine and not along with it.
Interactions with food items
- You should avoid grapefruit juice, apple juice or orange juice while on this medicine, as it may increase the side effects of this medicine.
Dosage
Overdose
Symptoms of an overdose can lead to dizziness, drowsiness, fatigue and dry mouth. If you think you have taken too much of this medicine contact your doctor immediately or visit the nearest hospital.
Missed a Dose
If you have missed any dose of this medicine, take it as soon as you remember. If it's time for your next dose, then skip the missed dose and continue with your regular dosing schedule. Do not take a double dose of medicine to compensate for the missed one.
Frequently Asked Questions (FAQs)
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