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300 mcg

From £49.99

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Tuesday, 28 June 2022

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Discreet & Confidential

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  • Overview
  • FAQ
  • Side Effects
  • Information leaflet
  • Reviews

What is Jext

Jext is a commonly used adrenaline injector for conditions like severe allergic reactions, cardiac arrest, etc. Such injectors are often called Adrenaline Autoinjectors. They contain the hormone adrenaline as a tartrate. It belongs to a class of medications known as "sympathomimetics" used during life-threatening conditions. The primary function of adrenaline is to increase blood flow to the heart and speed up your pulse. This increased blood flow is needed to combat cardiac arrest or anaphylactic shock.

Anaphylactic shocks can occur as a side effect of exposure to allergens. Anyone near a substance they are allergic to for a considerable time can go into anaphylactic shock. During anaphylaxis, your airways close in, and your tongue tends to swell. As a result, breathing becomes difficult, and you experience nausea, vomiting or dizziness. Falling unconscious is also a symptom of anaphylaxis. In addition, your blood pressure drops, and blood flow to the heart slows down.

During cardiac arrest, you experience similar symptoms. The blood flow to the heart is extremely low, your blood vessels get dilated, and as a result, many organs are deprived of a steady blood flow. This is a difficult situation that can be fatal. That is why using the Jext pen immediately is essential.

Why choose Jext?

Anaphylactic shock is a serious life threatening shock. It is described as life-threatening because it can lead to death if proper medical assistance doesn't arrive in time. In such a situation, waiting for an ambulance or driving to the hospital can cause delay to the treatment required. That is why having a Jext pen to hand is very crucial. The Jext pen is easy to use, and anyone can administer it for you.

Can I buy Jext online?

You can buy Jext pens as a pack of 1 or 2 pens. Keep in mind that Jext is a strong deterrent. This means you will need a prescription to purchase it. You can also purchase Jext from Click Pharmacy after completing a short medical assessment. Once the assessment is complete, our prescribers will issue a prescripton to buy Jext pen on our website.

Difference between EpiPen and Jext

Although both Adrenaline (epinephrine) pens come in the same doses and their purpose are identical, their mechanism are slightly different. The EpiPen has a spring-loaded concealed needle that delivers a single measured dose when the pen is jabbed against the muscle of the outer thigh. EpiPen's patent 'click' mechanism indicates when the injection has started. Jext on the other hand is a single-use auto-injector which has a locking needle shield designed to protect against accidental needle stick injury, activated once the injection has been administered. 

What dose of Jext should I choose?

The Jext Pen dose varies according to age and body build. The usual dose for individuals who weigh 15kgs to 30kgs is 0.15 milligrams. For those weighing above 30 kgs, a dose of 0.3 milligrams is sufficient. However, your doctor may need to adjust the dosage according to the severity of your allergies. Therefore, you should always consult a doctor before purchasing the Jext pen.

How should I take the Jext pen?

If you are someone who requires a Jext, you should ask the doctor or medicial professional to explain how to use it and when. In addition, make sure people who spend a lot of time with you, family, close friends, and Co-workers are also aware that you require a Jext and know how to administer one in case you cannot inject it yourself.

The jext pen should only be administered on the outer thigh and used as soon as you come in contact with the allergen. First, remove the substance that induced your allergic reaction from the body and clean the surface. Then, hold the Jext at a 90 degrees angle from your outer thigh. Then press the tip, releasing the adrenaline into your body. You have to keep this position maintained for about 10-15 seconds.

Sometimes, one injection is not enough. For example, one injection might not reverse the side effects if you've been exposed to many allergens or for too long. When this happens, you should wait 10-15 minutes before injecting a second Jext pen in the same way.

How does the Jext pen work?

The jext pen works by releasing a hormone known as epinephrine or, more commonly, adrenaline into the body. Adrenaline is called the fight or flight hormone. During an emergency, it takes measures to control your body's functioning and respond to the outside stimulus accordingly.

Usually, when exposed to an allergen, your body will undergo stress. Your airways will begin to close up, your blood vessels will be dilated, blood flow to the heart will decrease, and you may go into anaphylactic shock or cardiac arrest. The Jext pen will work to reverse this. The adrenaline will stimulate the blood flow to the heart to increase. This happens when the adrenaline targets the beta and alpha receptors. The alpha receptors are in the walls of the blood vessels. The adrenaline stimulates them to narrow, and the blood flow becomes more steady and increases.

The heart and lungs contain the beta receptors. When they are stimulated, your airways begin to clear up. The choking sensation subsides, and it becomes easier to breathe. During anaphylactic shock, your organs do not receive proper blood flow. But this problem is quickly solved when the alpha and beta receptors are in action. The heart and lungs receive adequate blood flow. The appearance of a rash or hives also goes down.

Can you use a Jext pen when pregnant?

Research shows no harmful effects of the Jext pen on your unborn baby. The anaphylactic shock, however, is hazardous for your unborn baby. It can lead to a loss of oxygen to the baby, stunting their growth and may even lead to permanent damage to motor functions. That is why doctors recommend using the Jext pen as soon as possible when experiencing anaphylactic shock.

You can also use the medication in an emergency if you are breastfeeding.

You must inform the doctor if you are pregnant or currently breastfeeding when they recommend a Jext pen. If you require a different dose than usual, your doctor will adjust it accordingly.

How to store a Jext pen?

You should never forget to be extremely careful with your Jext pen. Firstly, storing the Jext pen carefully and in the proper condition is essential. If it is in an environment that is too hot or too cold for the adrenaline stored inside, it may go bad. Secondly, always make sure to check the expiry date of your Jext pen. Using an expired Jext pen is hazardous to your health and can have the opposite of the intended effect.

Always make sure to store your Jext in its original carrier. Make sure the temperature is 25 degrees or below. It would help if you did not refrigerate or freeze the Jext pen. This will cause the adrenaline to go bad as well. The colour of the liquid in the carrier should always be transparent. It should not be foggy. If it appears to be cloudy, it's an indication that the fluid has expired. It would help if you immediately replaced it in such a circumstance. Finally, keep the Jext stored where children cannot easily reach it. If children get ahold of the Jext and use it without supervision, take them to the doctor immediately.

What are the side effects of Jext?

Like other injectable substances, Jext has numerous side effects as well. These side effects may not impact everyone who uses the Jext pen. However, if they affect you, you should contact a physician and discontinue use until they give you the go-ahead.

Some of the common side effects that you can expect to see within 5-10 minutes of injecting the Jext pen include:

  • Dizziness
  • Light-headedness
  • Difficulty in breathing
  • Headache
  • Nausea
  • Vomiting
  • Weakness
  • High blood pressure
  • Rapid pulse rate
  • Anxiety
  • Hallucinations
  • Tremors

In case you have accidentally injected the Jext pen without an allergic recreation, you might experience an increase in your pulse rate. In such a case, you should contact a medical professional as fast as possible.

Although the Jext pen is safe to administer, you must be cautious with a few conditions. For instance, patients with cardiovascular diseases like atherosclerosis, cardiac arrhythmia, hypertension, and obstructive cardiomyopathy may see a different range of side effects from the Jext pen. Thus, it would help if you did not use it until your doctor has given you the go-ahead that it is safe for you.

You should also inform your doctor if you are on any other medication. Adrenaline may interact with other medications and cause serious problems. Let your doctor know if you are taking any of the following kinds of medication:

  • Antidepressants
  • Medication against Parkinson's disease
  • Medication for breathing problems
  • Medications for thyroid issues
  • Alpha and beta blocking medications (since these are the central receptors targeted by the Jext pen)
  • Anti-allergy medications

These are some medications that adrenaline may not exhibit the best reactions. You should let your doctor know beforehand if you are using them. Secondly, avoid alcohol after the Jext pen since alcohol exacerbates the impact of adrenaline.

Can children use a Jext pen?

Children can use the Jext pen 150mcg after consultation with their doctor.

What is the difference between the Jext and Jext Kids?

The Jext delivers a dose of 300 mcg, suitable for people weighing above 30 kgs, while the Jext Kids. provides a dose of 150 mcg, ideal for those weighing 15kgs to 30 kgs.

When should I inject a Jext pen?

You should use the Jext as soon as the allergic reaction occurs.

Who should inject a Jext pen?

The person undergoing the allergic reaction can administer the injection themselves, or someone in the vicinity may help.

How long should I hold the Jext in place when injected?

You should keep it in place for a minimum of 10 seconds.

How should I inject the Jext pen?

Press it into the thigh at a 90 degrees angle and hold for 10 seconds before letting go.

What if I use a Jext pen when I don't need to?

You should immediately contact the doctor if you accidentally use a Jext pen at the wrong time. You might witness swelling or damage in specific tissues.

Can I use a Jext pen if I am pregnant?

Yes, you can use a Jext pen when pregnant. There is no research to show that adrenaline is harmful to the baby.

Can I inject a Jext pen through my clothes?

You can inject the Jext pen through clothes. However, it'll be easier to inject directly into the skin.

What should I do if I accidentally open the safety cap of the Jext pen?

If you have activated the Jext pen, you must dispose of it. Otherwise, you can pop the cap back on and leave it be.

Where do I store my Jext Pen?

Never freeze your Jext pen. Instead, keep it in the original carrier below 25 degrees.

How do I dispose of the Jext pen?

You can dispose of the Jext in the proper rubbish bin. Check for a needle cover so that it does not accidentally poke someone.

What should I do if there's an air bubble in my Jext?

Air bubbles are natural and will not cause you any harm. You can use the Jext as it is.

Can I travel with my Jext?

You should never travel without your Jext pen, however you are required to carry a valid prescription when traveling on board a plane or going through custom control at an airport. 

After you have injected the Jext, you can expect to experience the following:

  • Dizziness
  • Nausea
  • Vomiting
  • Weakness
  • High blood pressure
  • Rapid pulse rate

In case you have accidentally injected the Jext pen without an allergic recreation, you might experience an increase in your pulse rate. In such a case, you should contact a medical professional or a healthcare expert immedietly.

Always read the patient information leaflet before starting your treatment. The patient information can be found here

Authored by Jana Abelovska

Last reviewed 20 April 2021

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