Telfast (Fexofenadine)

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Telfast (fexofenadine) is a fast acting antihistamine used to treat symptoms associated with hay fever.

What is Telfast and what is in it?

Telfast is an antihistamine medication used to treat symptoms of hay fever, or seasonal allergic rhinitis. It contains the active ingredient fexofenadine hydrochloride, a non-sedating antihistamine also present in generic Fexofenadine. Hay fever is characterised by a runny, itchy and blocked nose; itchy, red and watering eyes; and sneezing.

How should I use Telfast?

For adults, a Telfast tablet should be taken at a dose of 120mg once a day before a meal. If you forget a dose, do not take a double dose to make up for the forgotten one.

How fast does it work?

The antihistamine effects of Telfast can begin to work after about an hour, with the maximum effect 6 hours after taking the tablet with water.

How long does it last?

Telfast can last up to 24 hours.

What is the difference between Telfast and Fexofinadine?

Telfast is the branded and more expensive version of generic Fexofenadine, which both contain the same active ingredient and are medically equivalent.

What is Allegra?

It is another brand name for the active ingredient fexofenadine hydrochloride. Allegra is only available in the US, but it is sold in the UK under the name Telfast.

Like all medicines, this medicine can cause side effects, although not everybody gets them.

Common side effects (may affect up to 1 in 10 people):
headache
drowsiness
feeling sick (nausea)
dizziness
Uncommon side effects (may affect up to 1 in 100 people):
tiredness
sleepiness

 Information Leaflet

Always read the patient information leaflet before commencing treatment.

Telfast Reviews

9.6/ 10
5
267
4
36
3
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2
1
1
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Based on 309 independent customer reviews taken by Feefo (see all Feefo Reviews), Google and Trustpilot (see all Trustpilot Reviews).


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"Prescription medication ."

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"Clear and concise order process including medical approval. Useful confirmation summary. Earlier than expected delivery in letter box size package."

"Very good service"

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"Help with allergy "

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"Very good service. Would recommend."


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"Great Pharmacy!"

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"The only antihistamine that works for me. I normally have on repeated prescrition with the GP but they changed the system and it was going to take days. Pharmica to the rescue."

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"Great prices, simple order process and fast delivery. Since discovering Pharmica, is the only online pharmacy I use."

"Ordered my tablets & they were here the…"

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"The higher dose has helped with my CSU which my regular GP only prescribed 120mg which I was having to take a 10mg of an over the counter along side. Would highly recommend this company."

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"Ordered my tablets & they were here the next day great service."


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"Just what I need - saves ringing up the Dr ."

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"Really good service , very quick and reliable.
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"Always efficient"

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"Works well "

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"Always efficient, order received on time ."


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"Amazing and efficient"

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"Helped me receive my medication in time"

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"Amazing and efficient service!"

"Bought orlistat, good company."

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"Bought for partner who has bad hay fever. Worked very well."

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"Bought orlistat from this company to avoid taking time off for a doctors appointment. Was reasonably priced, the product is legitimate, delivered quickly. I have used this company a few times, would recommend if you know what you need and you’re willing to pay for it."


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"Excellent service"

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"It’s easing my CSU as my GP only prescribed a smaller dose."

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"From start to finish the service & delivery was straight forward quicker than my own GP prescription service."


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