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Jext FAQs

What is Jext?
How does adrenaline work?
How should I use Jext?
How will I know that my Jext has worked and that I have received my medicine?
Can Jext be used through clothing?
After using Jext what should I do?
How do I dispose of an out-of-date Jext which has not been used?
How do I use my Jext Trainer?
How can I obtain a Jext Trainer?
Why is Jext available in different doses?
What should I tell family, friends and colleagues?
There is an "air" bubble in my Jext is it still OK to use?
When should I use my Jext?
How can I remember to replace my Jext when it is due to expire?
I have noticed that my Jext is out of date, what do I do?
What should I do if the liquid visible through the inspection window is no longer clear and colourless?
How should I store my Jext?
Are there any precautions I should take with my Jext when I go on holiday?
I am travelling to a very different climate to the UK and I wondered if my Jext would still work properly?
I have lost my patient information leaflet. How do I obtain another one?
I have accidently removed the yellow cap but do not need to use my Jext, what should I do?
I registered for an expiry alert but would now like to cancel it. How do I do this?
Does Jext® contain Latex?

What is Jext?

Jext is a single-use adrenaline auto-injector. Each Jext injects a premeasured single dose of adrenaline for the emergency treatment of anaphylaxis. The needle is contained within the Jext before use and is automatically covered by the black tip after use.

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How does adrenaline work?

Adrenaline occurs naturally in the body. Adrenaline injected into the muscle of the upper outer thigh is the first choice drug for the emergency treatment of anaphylaxis because it works quickly to reverse the symptoms of an anaphylactic reaction.

Adrenaline acts to raise low blood pressure which can cause dizziness, collapse and loss of consciousness in anaphylaxis. It also relaxes smooth muscle in the lungs to improve breathing and reduces swelling around the face and lips.

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How should I use Jext?

Always use Jext exactly as your doctor has told you. Make sure you understand in what situations you should use Jext. If you are at all unsure about how to use it, ask to have the instructions repeated by your doctor, nurse or pharmacist.

Jext should be pushed firmly against the outer portion of the thigh into the largest part of the thigh muscle. When you push Jext firmly against your thigh, a spring activated plunger will be released, which pushes the hidden needle through the seal at the end of the black needle shield, into the thigh muscle and injects a dose of adrenaline.

Before you ever need to use it, you should familiarise yourself with Jext and practise using a Jext Trainer together with the training video. View our video demonstration on how to use your Jext.

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How will I know that my Jext has worked and that I have received my medicine?

When the Jext activates to deliver the medicine a distinct 'click' will be heard. The inspection window in the label will be filled by a white or blue coloured plastic rod to confirm that adrenaline has been injected and a needle guard will extend to cover the needle.

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Can Jext be used through clothing?

Yes, Jext is specifically designed to reliably operate through clothing, including tough fabrics such as denim.

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After using Jext what should I do?

Jext should be considered first aid and you should always seek medical attention after using it. After administering Jext, dial 999 or get someone else to do so. Pass the used Jext to a Healthcare Professional when you seek medical assistance. Remember to get a replacement.

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How do I dispose of an out-of-date Jext which has not been used?

You should contact your GP surgery or your Local Authority who will be able to advise you of the local arrangements for disposal of an out of date Jext.

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How do I use my Jext Trainer?

Your Jext Trainer works in exactly the same way as a real Jext although there is no adrenaline and no needle in the Trainer. The Jext Trainer is pale blue in colour to differentiate it from the real Jext device. 

Unlike a real Jext, the Trainer can be reset and used as many times as you need to become familiar with the correct technique.

You, your family and your friends should use the Jext Trainer together with the training video to ensure you are fully prepared and confident if you need to use your Jext in the future. View our video demonstration on how to use your Jext.

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How can I obtain a Jext Trainer?

A Jext Trainer can be ordered on the Jext website when you register for an expiry alert.

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Why is Jext available in different doses?

The appropriate dose will be decided by your doctor, who will adjust it individually for you.

  • Adults and Children over 30kg – the usual dose for self-administered adrenaline in allergic emergencies is 300 micrograms of adrenaline for injection into the outer thigh muscle.
  • Children between 15kg and 30kg - the usual dose for self-administered adrenaline in allergic emergencies is 150 micrograms of adrenaline for injection into the outer thigh muscle.

Remember: the correct dose of Jext depends on bodyweight. The dose will need to be increased as your child develops.

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What should I tell family, friends and colleagues?

Make sure that you tell family, friends and colleagues what to do if you were to experience anaphylaxis. They should know how to recognise the signs and symptoms and how to administer your Jext if required. A Jext Trainer may be of assistance in teaching others who may be available to help if you experience anaphylaxis. Ask them to visit this website to learn more and watch the video demonstration.

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There is an 'air' bubble in my Jext is it still OK to use?

The bubble is perfectly normal to find in Jext. You can confidently use your Jext as the bubble will not affect either the medication or the mechanism.

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When should I use my Jext?

You should be trained by your doctor or nurse as to when and how to use your Jext.
If you are at all unsure about when to use your Jext, ask to have the instructions repeated by your doctor or nurse.

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How can I remember to replace my Jext when it is due to expire?

You can register online at the Jext website for an automatic expiry .You can register by mobile phone for a sms text alert by texting Alert followed by the month and year your Jext expires to 80818 – for example a Jext with an expiry date of September 2018 would be Alert 092018 to 80818.

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I have noticed that my Jext is out of date, what do I do?

Contact your doctor to arrange to replace your Jext by the expiry date stated on the label and printed on the box. The expiry date refers to the last day of the month. After the expiry date the adrenaline may not work effectively.

Automatic expiry alerts can be set up by registering online at the Jext website or by mobile phone sms text alert by texting Alert followed by the month and year your Jext expires to 80818 – for example a Jext with an expiry date of September 2018 would be Alert 092018 to 80818.

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What should I do if the liquid visible through the inspection window is no longer clear and colourless

Contact your doctor to arrange to replace your Jext if the adrenaline solution visible through the inspection window becomes discoloured or contains particles.

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How should I store my Jext?

Jext should be stored within the flip-top case provided. Store below 25°C. Do not freeze.

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Are there any precautions I should take with my Jext when I go on holiday?

Make sure that you have sufficient Jext auto-injectors with you.

Check with your holiday company or airline whether a letter from your GP will be required permitting you to carry your Jext onboard the aircraft.

When travelling abroad it is important you take the same level of care as you would at home, if not more. Prepare yourself by downloading our useful travel sheets and carrying these with you at all times.

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I am travelling to a very different climate to the UK and I wondered if my Jext would still work properly?

When travelling you should take the same care of your Jext as you would in the UK. Store your Jext within the flip-top case. Store below 25°C. Do not freeze.

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I have accidently removed the yellow cap but do not need to use my Jext, what should I do?

When the yellow cap is removed the Jext is 'armed' to fire. Remember never touch the black tip as this is where the needle fires from when the yellow cap is removed from the opposite end.

The yellow cap can be carefully replaced if the Jext has not been used. The Jext can then be safely returned to the flip-top case to be used in the future.

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I registered for an expiry alert but would now like to cancel it. How do I do this?

You can cancel any expiry alert that you have previously registered for (including online and mobile phone registrations) by using the expiry alert cancellation form.

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Does Jext® contain Latex?

Jext® is Latex free.

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