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Fexofenadine
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Fexofenadine hydrochloride is a high-strength, non-drowsy second-generation antihistamine used to effectively treat hay fever (seasonal allergic rhinitis) and chronic hives (urticaria) by providing fast-acting, 24-hour relief from symptoms like sneezing, itchy eyes and skin rashes.
- Starts working within 60 minutes to combat allergy triggers
- A second-generation antihistamine designed not to cause sleepiness
- Simple once-daily dosage for all-day protection
- Available for hay fever and chronic hives
More information
Fexofenadine is a clinically proven, non-sedating antihistamine frequently prescribed to UK patients for the management of seasonal allergic rhinitis, commonly known as hay fever, and chronic idiopathic urticaria, or hives. It works by selectively blocking H1 receptors to prevent histamine from triggering inflammatory responses like itchy skin, watery eyes and nasal congestion, offering a robust alternative for those who find standard over-the-counter options insufficient.
- Rachael Clarke MRCPharm MFRPSI FRSPH (GPHC Number: 2061366)You can buy fexofenadine online through Mail My Meds by completing a simple clinical consultation which is reviewed by a UK registered prescriber to ensure the treatment is safe for you. Once approved, your medication is dispensed and shipped discreetly to your home from our regulated pharmacy (GPHC Number: 9011560), providing a convenient way to manage your allergies without a face-to-face GP appointment.
The price of fexofenadine varies depending on the strength (120mg or 180mg) and the quantity of tablets ordered. At Mail My Meds, we aim to provide competitive pricing for both private and NHS repeat prescriptions, often proving more cost-effective than multiple over-the-counter purchases for long-term allergy sufferers.
We offer several delivery options to suit your schedule, including standard and next-day delivery across the UK. All orders are sent in discreet, plain packaging to ensure your privacy, with tracking available so you can monitor your shipment from our pharmacy to your doorstep.
Fexofenadine is a second-generation antihistamine used to treat the symptoms of hay fever, conjunctivitis, eczema, and hives. Unlike older antihistamines, it is specifically designed to be non-drowsy, making it a preferred choice for adults and children over 12 who need to stay alert during the day while managing allergy symptoms.
The active ingredient is fexofenadine hydrochloride, a powerful antihistamine agent. Depending on the version you are prescribed, each tablet contains either 120mg or 180mg of the active substance, along with inactive excipients used to form the tablet coating and core, such as microcrystalline cellulose and magnesium stearate.
Most users report high satisfaction with fexofenadine due to its effectiveness in treating severe hay fever where other medications like loratadine have failed. Clinical data suggests it is well-tolerated, with many patients highlighting the benefit of the once-daily dose and the lack of sedative effects compared to first-generation alternatives.
The Patient Information Leaflet (PIL) contains essential details on how to take your medicine safely. You should read the PIL provided with your specific brand of fexofenadine (such as Telfast or Allevia) before starting treatment to understand the full list of ingredients and potential contraindications.
Fexofenadine works by blocking the action of histamine, a natural chemical in the body that triggers allergic symptoms when you encounter allergens like pollen or pet dander. By binding to H1 receptors, fexofenadine prevents histamine from causing the swelling, itching, and mucus production associated with allergic reactions.
You should take your fexofenadine tablet with a drink of water before a meal to ensure optimal absorption. It is important to avoid taking the medication with fruit juices (such as orange, grapefruit, or apple) as these can significantly reduce the amount of medicine your body absorbs, making the treatment less effective.
The standard dosage for adults and children aged 12 and over is one 120mg tablet daily for hay fever, or one 180mg tablet daily for chronic hives. You should never exceed the maximum dose of 180mg in a 24-hour period unless specifically instructed by a medical professional. Taking two 180mg tablets at once is not recommended and increases the risk of side effects.
Common side effects of fexofenadine are generally mild and may include headaches, dizziness, feeling sick (nausea), and occasionally sleepiness. Although rare, serious side effects can occur. Seek immediate medical attention if you experience a fast or irregular heartbeat or signs of a severe allergic reaction such as swelling of the face or difficulty breathing.
Fexofenadine should be used with caution if you have a history of heart disease, as some antihistamines have been linked to palpitations. If you are pregnant or breastfeeding, you must consult your doctor before use, as alternative antihistamines with more extensive safety data are often preferred in these instances (NHS 2025).
| Treatment | Active Ingredient | Drowsiness Risk | Typical Use |
|---|---|---|---|
| Fexofenadine | Fexofenadine HCl | Very Low (Non-drowsy) | Moderate to severe hay fever/hives |
| Cetirizine | Cetirizine HCl | Low (May cause some sleepiness) | General allergies |
| Loratadine | Loratadine | Very Low | Mild hay fever |
| Piriton | Chlorphenamine | High (Sedating) | Acute reactions/Itching |
How long does fexofenadine take to work?
Fexofenadine typically starts to work within 1 hour of ingestion, with its peak effect occurring approximately 2 to 3 hours after taking the tablet. For best results, it should be taken consistently at the same time each day during the allergy season.
Can I drink alcohol with fexofenadine?
It is generally advised to avoid alcohol while taking fexofenadine as it can increase the risk of feeling dizzy or sleepy. While it is a non-drowsy antihistamine, alcohol can amplify its effects on the central nervous system in some individuals.
Can I buy fexofenadine over the counter in the UK?
Yes, 120mg fexofenadine is available over the counter (OTC) for hay fever. However, the higher 180mg strength and larger pack sizes for chronic conditions still require a consultation with a pharmacist or a prescription from a registered prescriber.
Does fexofenadine cause weight gain?
There is no significant clinical evidence to suggest that fexofenadine causes weight gain. Unlike some older antihistamines that may interfere with appetite regulation, fexofenadine's modern formula does not typically affect body weight.
The information provided on this page is for general informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician, pharmacist, or other qualified health provider with any questions you may have regarding a medical condition or medication.
At Mail My Meds, our content is regularly reviewed by a dedicated team of medical experts and GPhC registered pharmacists to ensure all information is up to date, accurate, and reflects current UK clinical guidelines from the NHS and NICE.
