Telfast

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Treatment Information

Table of contents:

What is Telfast used for?

Telfast is a prescription-only, non-sedating antihistamine used to treat allergic rhinitis (hay fever) in adults.

Telfast is a brand of fexofenadine and is available in 120 mg and 180 mg tablet strengths.

You can get Telfast hayfever tablets online from Prescription Doctor, following a short consultation with one of our doctors.

If your order is approved before 3 pm, Monday to Friday, our UK-based pharmacy can dispense and dispatch your medicine the same day, with next-day delivery.

What is Hayfever?

Allergic reactions, such as hay fever, occur when the immune system overreacts to a substance in the body. For hayfever, this substance is an airborne allergen, such as grass or tree pollen.

The immune system responds by releasing a chemical called histamine. Histamine causes cold-like symptoms, such as red, itchy eyes, a runny nose, or a skin rash.

Telfast treats seasonal hay fever, which is caused by triggers such as:

  • Tree pollen
  • Grass pollen
  • Ragweed pollen
  • Outdoor fungi or mould

Hayfever season usually begins in late March and continues until September. Depending on the type of pollen you are allergic to, your hayfever symptoms may last longer than others.

Telfast is not the right choice for year-round allergies caused by common indoor triggers, such as pet dander.

Seasonal hay fever interferes with daily activities and disrupts sleep. It is essential that you talk to your doctor about your symptoms and treatment options.

It can also exacerbate other conditions such as asthma or chronic obstructive pulmonary disease (COPD). Left untreated, hay fever can lead to complications such as sinusitis, an infection that causes inflammation in the sinus cavities, or otitis media, an ear infection.


How does Telfast work?

Telfast contains fexofenadine hydrochloride, a non-sedating (non-drowsy) antihistamine that works to counter the effects of a chemical produced in the body called histamine.

The medication acts on the histamine receptors to prevent histamine from producing common symptoms of hay fever.

How long does Telfast take to work?

Telfast typically takes effect within 30 minutes to an hour after administration and lasts for 24 hours.


How do I take Telfast?

You must read the patient information leaflet before taking Telfast.

You can read the patient information leaflet for Telfast 120mg online.

Follow your doctor's instructions for taking Telfast.

The typical dose is one tablet per day (120 mg or 180 mg).

Swallow the tablet whole with a full glass of water before a meal.

What should I do if I forget to take Telfast?

If you forget to take Telfast, skip the missed dose and take the next dose at the usual time.

Do not double the dose in an attempt to make up for the missed one.

What should I do if I take too much Telfast?

Taking too much Telfast can lead to serious complications.

Symptoms of overdose with Telfast (fexofenadine) include:

  • Dizziness
  • Drowsiness
  • Fatigue
  • Dry mouth

Call your doctor immediately or go straight to your nearest accident and emergency department if you experience any of the above signs of an overdose.


Telfast side effects and cautions

Allergies

Do not use Telfast if you are allergic to:

  • Fexofenadine hydrochloride
  • Microcrystalline cellulose
  • Pregelatinised
  • Maize starch
  • Croscarmellose sodium
  • Magnesium stearate
  • Hypromellose
  • Povidone K30
  • Titanium dioxide (E171)
  • Colloidal anhydrous silica
  • Macrogol 44
  • Red iron oxide (E172)
  • Yellow iron oxide (E172)

If you experience an allergic reaction to Telfast, stop taking the medicine and seek immediate medical advice from your doctor. For cases of serious allergic reaction, go straight to your nearest accident and emergency department. Remember to take the packaging and any remaining medication with you, so that the doctors treating you know exactly what you took.

Who should not take Telfast?

Telfast (fexofenadine) may not be suitable for you. Speak to your doctor or pharmacist if you are unsure whether Telfast is safe for you to take.

Speak to your doctor before using Telfast if you:

  • Have problems with your liver or kidneys
  • Have or have had heart disease. Telfast can cause an irregular heartbeat.
  • Are elderly

Inform your doctor if you are taking any other medications, including over-the-counter products or herbal supplements.

Certain indigestion medications containing aluminium and magnesium can lower the amount of Telfast absorbed. Take this medication two hours before or after taking Telfast.

Can I take Telfast while pregnant or breastfeeding?

If you are pregnant, planning to become pregnant or breastfeeding, do not use Telfast until you speak to your doctor or pharmacist.

Do not take Telfast if you are pregnant, think you might be pregnant, or are breastfeeding.

Telfast is not safe for women who are breastfeeding. The medicine may be passed to the infant in breast milk.

Side effects

All medicines have the potential to cause side effects, although not everyone experiences them. Understanding the risks associated with your medicine is important to your care. We encourage you to familiarise yourself with the patient information leaflet, which comes enclosed with your medicine, before beginning treatment.

Common side effects of Telfast (fexofenadine):

  • Headache
  • Drowsiness
  • Nausea
  • Dizziness

This is not an exhaustive list of side effects. For further information regarding the safety of this medicine, please read the patient information leaflet enclosed with the medicine.

If you experience any side effects to Telfast, regardless of whether they are listed above or in the patient information leaflet, report them to your doctor as soon as possible.

If you experience an irregular heartbeat or signs of a serious allergic reaction after taking Telfast, go straight to the nearest accident and emergency department. Remember to take the packaging and any remaining medicine with you.

Other safety information

Always read the patient information leaflet enclosed with your medicine before you start taking Telfast.

Check the expiration date of Telfast before using it. If expired, do not discard the medication in wastewater or household waste. Take any unused medicine to your pharmacist for them to dispose of it safely on your behalf.

Always keep Telfast and all medications out of the sight and reach of children and pets.

Never share your medicine with anyone else, even if they have the same condition or are experiencing similar symptoms.


Frequently asked questions

Can I drink alcohol while taking Telfast?

Alcohol can increase your chances of experiencing side effects like fatigue or drowsiness. Avoid or limit your alcohol consumption while on this medication. Alcohol may also worsen the symptoms of hay fever.

Will Telfast impact my ability to drive or operate machinery?

It is unlikely that Telfast will affect your ability to drive or operate machinery. You should not drive or operate machinery until you know how the medication will affect you.

Will Telfast make you drowsy?

Telfast is a non-drowsy antihistamine and is unlikely to make you drowsy.

Is Telfast better than Zirtek?

Zirtek contains a different active ingredient than Telfast, called certirizine dihydrochloride.

If you are unsure which hayfever treatment is best for you, speak to your doctor or ask a pharmacist for advice.

Can I buy Telfast (fexofenadine) over-the-counter in the UK?

Telfast is only available on prescription. It cannot be bought over the counter from pharmacies or supermarkets. However, you can obtain a private prescription for Telfast online after consulting with one of our doctors.

In 2022, Sanofi, the manufacturer of Telfast, released an over-the-counter fexofenadine tablet called Allevia. This tablet contains 120mg of fexofenadine hydrochloride.


Additional Resources

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How do I get rid of hayfever?

Many of you who have been lifelong sufferers of hay fever won't need reminding of its detrimental effects on your body. Still, for those who are unfamiliar, hay fever is a form of allergic rhinitis that causes cold-like symptoms. Still, unlike a cold, hay fever isn't caused by contracting a virus; it is a seasonal condition that is usually more common between late March and September.What are the symptoms of hay fever?Symptoms can include:Persistent sneezing or coughingA runny or blocked, stuffy noseA sore, irritated throat, mouth, nose or earsSore, itchy, red and watery eyesA decrease in your sense of smellEaracheHeadacheFeeling tiredThose who suffer from asthma may also experience:A tight feeling in your chestShortness of breathWheezing and coughing"Hay fever will last for weeks or months, unlike a cold, which usually goes away after 1 to 2 weeks." ~ NHS UKSo now we know what causes hay fever and its symptoms, how can you get rid of it?Well, here’s the bad news: you can’t completely rid yourself of hay fever once you have started to develop its symptoms. All you can do is try to ease and manage the condition and be aware of when the pollen count is high, so that you can be prepared to treat it.Antihistamines are usually a hay fever sufferer's best friend when symptoms strike. Although they’re not a complete cure, they do provide significant relief. Also, nasal sprays, such as Dymista, and eye drops are usually a good complement to regular antihistamine use.In severe cases (such as those of you who suffer from asthma), steroid tablets or injections can be used, but only for a short time.What else can you do to ease your symptoms?As well as medication, you can also take the following preventative measures to ease your symptoms, especially when the pollen count is particularly high.Put a small amount of Vaseline into your nostrils to trap pollenShower and change your clothes regularly (especially when you have been outside) to wash pollen offStay indoors as often as you canVacuum and dust your home environment on a regular basisKeep your windows and doors shut as much as possibleBuy a pollen filter for the air vent of your carGet a HEPA Filter for your vacuum cleanerAre there any hay fever myths that you should know about?Well, you may be surprised to know that there are several hay fever myths circulating, which may be exacerbating your symptoms rather than alleviating them.Always remember that if you plan to try something new to alleviate your symptoms, you should first conduct thorough research or, more importantly, consult your general practitioner.Here are three of the most common hay fever myths around:Honey can get rid of your hay fever:Although honey may be a great way to soothe your itchy throat caused by hay fever, there has been very little evidence to prove that it helps reduce symptoms in any significant way."A small study conducted in Finland found that regular honey made only a marginal difference, but that honey with added birch pollen did seem to help. The authors caution, however, that this was only a pilot study and shouldn't be taken as a recommendation." ~ BBC FutureIt’s only flowers that will cause your allergies:I’m sure a lot of you who suffer from hay fever will naturally associate your allergies with summertime’s colourful blooms, but this is wrongly assumed. The pollen that causes your symptoms is mostly an airborne type that emanates mainly from grass, trees (such as birch and oak), and weeds."Showy flowers usually have insect dispersed pollen, which is sticky and heavy and is carried between the flowers by insects, so it does not get carried in the air." ~ Dr EmbelinWith prolonged use, you will become immune to Antihistamines:As we've already established, antihistamines are one of the most popular and effective ways for most Hay fever sufferers to combat symptoms. However, because your symptoms can vary in intensity, this may lead you to believe that your antihistamines have stopped working for you, but this isn't true! You can use antihistamines for an extended period without their effectiveness decreasing. However, if antihistamines have never been particularly effective for you, then it may be time to consult your GP to discuss an alternative treatment.For itching and watery eyes caused by pollen, you can reach for hay fever eye drops.So in conclusion, you have seen that hay fever can cause you some quite significant and unpleasant symptoms, but although there is no complete cure (and there may be some false information hanging around about what helps you and what doesn't), there are in fact many various, preventative measures that you can take to improve your comfort and health when the pollen strikes! With a little help and forward-thinking action, it is possible to have a safe and happy summer!
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How do I get rid of hayfever?
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How long does hayfever last?

Considered one of the most common allergies in the UK, hay fever, also known as allergic rhinitis, affects approximately 13 million people in the UK alone. Although relatively low-risk, hay fever can be considerably debilitating for sufferers and can significantly impact their quality of life, but how long does hay fever actually last?If you’re in the dark about the longevity of this common allergy, then today you should find everything you need to know about what to expect, how to tackle your symptoms and be prepared for summer.What is hay fever?Most of us will have heard of hay fever, but you may not know what it means or how it affects the body. In short, hay fever is an allergic reaction to pollen or dust. When inhaled, they irritate the mucus membranes found in the eyes and nose, causing inflammation and leading to a range of symptoms.Typically, hay fever is at its worst between the months of May and September, as these tend to be the hottest months when the pollen count is at its highest.What are the symptoms of hay fever?The severity of your allergies will determine how much you suffer; however, the following are the most common signs of hay fever are:CongestionCoughingFatigueItchy and watery eyesRunny noseSinus pressureSore and swollen under-eyesCan hay fever be serious?Hay fever is not considered a serious allergy; however, in the most severe cases, it can lead to other health complications that may require further treatment. Some of these include:Worsening asthmaLack of sleep or insomniaSinusitisEar infectionsReduced quality of lifeWho can hay fever affect?Unfortunately, hay fever can affect anyone, regardless of age, gender, or health status.When does hay fever kick in?Although it is possible to suffer the signs and symptoms of hay fever all year-round, the chances are that you will find your allergies flare up most during the spring and summer months. This is because tree pollen, grass pollen, dust mites and pet dander are often at their highest during this time.How long does hay fever last?Unfortunately, there is no guaranteed timeframe for hay fever symptoms. How long your hay fever lasts really depends on a variety of factors, including your level of exposure to allergens, the type of weather at the time, whether you are actively treating your symptoms and the type of pollen you are allergic to.As a general guide, tree pollen lasts the longest. Tree pollen allergies can begin as early as February and last until June.Grass and weed pollen typically last for a shorter period and peak during the summer. Allergies to grass pollen start from May and last until June, while symptoms caused by weed pollen can occur from June to September.Typically, the severity of symptoms fluctuates from week to week or month to month, depending on pollen levels; however, in general, hay fever can last anywhere from a few weeks to a few months.It is also important to note that everyone is different. While some may suffer mild irritation, others can find hay fever to be incredibly debilitating and may find little relief from medications. In general, however, most people find that their hay fever symptoms ease up as they get older, with around 10-20% of sufferers reporting their symptoms completely disappear after several years.How can you reduce your hay fever symptoms?While there is no cure for hay fever, there are some things you can do to reduce the severity of your symptoms:Seek advice from your pharmacy or doctor. There is a range of over-the-counter antihistamines which can help, or your GP may prescribe medication in more severe cases or when other treatments haven't worked.Keep a close eye on the pollen count.Refrain from going outdoors during a high pollen count.Have a shower and change your clothes after being outdoors to remove any pollen that has attached to you.Wearing wraparound sunglasses when outdoors protects your eyes from exposure to pollen.Applying Vaseline (petroleum jelly) around the nasal passages can help trap pollen and prevent an excessively runny nose.Things to avoid during high pollen season:Cutting the grassWalks through fieldsFresh flowers indoorsDrying clothes outsideHaving a lot of contact with pets (typically, cats and dogs carry a lot of pollen in their fur when they have been outside)The bottom line on hay feverWhile incredibly irritating and inconvenient, hay fever usually won’t pose any major threat to your general health, but we understand it can certainly make life difficult during peak seasons.To help combat the unwelcome signs of hay fever, it is helpful to come prepared with an effective and fast-acting treatment, such as the Nasonex intranasal treatment spray or Neoclarityn tablets. These types of medicines can offer relief when you need it most and help clear the airways during those more challenging days.For itching and watery eyes (allergic conjunctivitis) caused by hay fever, eye drops are available from pharmacies, such as Murine Hayfever Relief and Optrex Hayfever Relief. These eye drops can help reduce irritation, redness, and tearing, which are commonly associated with hay fever.
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How long does hayfever last?
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5 tips to beat hayfever

Hay fever, medically known as allergic rhinitis, is an allergy to pollen which usually occurs between Spring and Autumn (seasonal allergic rhinitis). However, it can also occur year-round (perennial allergic rhinitis). Approximately 95% of hay fever sufferers are allergic to grass pollen, but some people are also allergic to pollen from trees or weeds. It's a common misconception that hay fever is caused by pollen from flowers, which is denser and not carried by the wind.Hay fever occurs because the body's immune system sees particles of pollen as a harmful infection. In response, the body launches a chemical called histamine to fight the foreign body. This chemical is the agent which causes the common symptoms of hay fever, including:itchy eyes, nose, throat or skinrunny nosesneezingwatery eyesimpaired sense of smellAfter initial exposure, symptoms may progress to include:Stuffy noseSore throatCoughClogged earsFatigueHeadacheSinus problemsIndividuals with asthma may be more susceptible to the effects of hay fever and may need to increase their use of inhalers. This is because histamine can cause the smooth muscle surrounding the airways to constrict and tighten, thereby restricting a person's ability to breathe.Hay fever symptoms typically occur from early Spring through early Autumn. Different trees, weeds and grasses release pollen at slightly different times every year. The pollen count is usually the highest on warmer, drier days.While there is currently no cure for hay fever, several treatments are available to alleviate or prevent symptoms. Such treatments include nasal sprays, antihistamine tablets and, in more serious cases, immunotherapy, which involves regular injections administered by a healthcare professional. However, there are a number of simple things you can do to minimise your pollen exposure and prevent your symptoms from occurring.1. Stay indoors when the pollen count is highPollen count is an index which determines the amount of pollen in the air. The pollen count is usually included as part of your local weather forecast, though the national pollen levels can also be found online or through weather forecast apps for your smartphone.While the pollen count is high, keep your home and car doors and windows closed to keep out pollen. You may also adjust your air conditioner setting to recirculate air, rather than draw in pollen-filled outside air.Pollen counts are highest between 5 am and 10 am. As pollen is carried on the wind, it is most likely to be found in the highest concentrations on warm, dry, and windy days. Stay indoors or limit outdoor time during those times, if possible. The pollen count drops after rainy spells, as the water washes pollen particles out of the air.During the night, when the pollen count is lower, you can open your bedroom window to allow cool air to circulate. Not only can this prevent symptoms from exacerbating during the night, but it also provides an optimal sleeping environment.2. Wash your hair and clothes oftenLingering pollen particles can stick to the fibres of your hair and clothing, causing you to inadvertently spread pollen into your home. Wash your clothes as often as possible, especially after being exposed to high pollen counts. Don't hang dry your clothes outside, or they'll be covered in pollen.3. Wear wraparound sunglassesWearing wraparound sunglasses when outdoors can help keep pollen out of your eyes. Pollen in your eyes can cause them to itch and water. Some wraparound sunglasses have removable gaskets which trap pollen and block wind to keep eyes moisturised. Wearing a sun hat or baseball cap can also prevent pollen from getting into your eyes.4. Rub Vaseline under and around your nostrilsVaseline, also known as petroleum jelly, can be used to trap pollen before it enters your nostrils, preventing symptoms from developing. Rub a small amount of Vaseline above your lip and around the opening of your nostrils for the best effect.There are also nasal allergy balms, such as Vicks Inhaler Stick, that are available from your pharmacist, which work similarly.5. Speak to a pharmacistMost pharmacies have antihistamines and special nasal sprays, such as Beconase, to treat or prevent hay fever.Antihistamines block the body's ability to launch a defensive response to pollen particles, while nasal sprays can prevent nasal passages from becoming inflamed due to pollen exposure. With regular use, these medicines can reduce the development and duration of your symptoms.For relief from itching and watery eyes (allergic conjunctivitis), a variety of eye drops are available at pharmacies. These help reduce and prevent inflammation in the eyes caused by hay fever. Prescription Doctor offers Murine Hayfever Relief and Optrex Hayfever Relief eye drops. These can be used in conjunction with other hay fever treatments, such as antihistamine tablets and nasal sprays.If you still suffer from symptoms while using over-the-counter hay fever medicines, contact your GP. They may be able to offer alternative treatments for your symptoms, including immunotherapy or prescription-strength medication. If you find your asthma symptoms flare up during hay fever season, you can speak to your asthma nurse for advice.Preventing hay fever altogether can only happen if you stay indoors. This is often not an option, since most people need to leave the house to go to work, shop, or exercise. In the morning, check the pollen count and take appropriate steps to minimise your exposure to pollen and prevent allergic symptoms from arising. Consult with your pharmacist to determine which hay fever medications are most suitable for your needs.
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5 tips to beat hayfever

Treatment information

  • Product Name: Telfast
  • Manufacturer: Sanofi
  • Active Ingredient(s): Fexofenadine hydrochloride
  • Administration: Oral
  • Presentation: Tablets
  • Available Strength: 120 mg or 180 mg
  • Exemption: Prescription-only
  • Application: Men and women over 18+
  • Dosage: Take one tablet daily.
  • Description: Telfast is an oral antihistamine which prevents the symptoms of hayfever
  • Drug Class: Antihistamine
  • Alcohol Consumption: Avoid or limit alcohol consumption
  • When Pregnant: Speak to your doctor before taking Telfast if you are pregnant
  • When Breastfeeding: Speak to your doctor before taking Telfast if you are breastfeeding
  • Price: 16.99 GBP
  • https://www.prescriptiondoctor.com/storage/product_images_th/telfast.png
Click here to view the Telfast - Patient Information Leaflet

Authored & Reviewed By

Mohamed Imran Lakhi

Mohamed Imran Lakhi

MPharm - Lead Pharmacist
Imran Lakhi is the superintendent pharmacist and founder at Prescription Doctor. He has been at the core of our team.

Published on: 23/05/2019 Reviewed on: 13/03/2024

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