Jext 300
- Intended for emergency treatment of life-threatening allergic reactions
- Jext contains adrenaline, a hormone that the body naturally releases in response to stress
- Always read the patient information leaflet before use.
Buy Jext Pen
Jext is an auto-injector pen containing a sterile solution of adrenaline, intended for emergency treatment of life-threatening allergic reactions (anaphylactic shock) to insect stings or bites, foods, drugs or exercise. Symptoms of an anaphylactic shock occur within minutes and can include:
- Itching of the skin or raised rash
- Flushing
- Swelling of the lips, throat, tongue, hands and feet
- Wheezing, hoarseness or shortness of breath
- Nausea or vomiting
- Stomach cramps
- In some cases, loss of consciousness
How Jext works
Jext contains adrenaline, a hormone that the body naturally releases in response to stress. Adrenaline reverses the effects of anaphylactic shock, opening up the airways, reducing throat swelling and returning blood pressure back to normal.
Directions
Always take this medicine exactly as described in the patient information leaflet or as your doctor or pharmacist has told you. The recommended dose for adults and children weighing over 30kg (66lb) is 300 micrograms, injected into the outer thigh muscle. For children between 15kg (33lb) and 30kg (66lb), the recommended dose is 150 micrograms. Use the Jext pen as soon as you notice the signs of an acute allergic reaction, through clothing if necessary.
- Grasp the Jext pen with your dominant hand (the one you use to write with), with your thumb closest to the yellow cap.
- Pull off the yellow cap with your other hand.
- Place the black injector tip against your outer thigh, holding the injector at a right angle (90°) to the thigh
- Push the black tip firmly into your outer thigh until you hear a ‘click’ confirming the injection has started, then keep it pushed in. Hold the injector firmly in place against the thigh for 10 seconds (a slow count to 10), then remove. The black tip will extend automatically and hide the needle.
- Massage the injection area for 10 seconds. Then seek emergency medical help - dial 999 and ask for an ambulance, state anaphylaxis.
You may notice a small air bubble in the injector pen, but this doesn’t affect the way the product works. Even though most of the liquid remains in the pen after use, it cannot be reused.
While waiting for the ambulance, lie down with your feet raised (unless this makes you feel breathless, in which case you should sit up). Ask someone to stay with you until the ambulance arrives in case you feel unwell again.
If you are attending to someone who is unconscious, place them on their side in the recovery position.
Side effects
Like all medicines, Jext can cause side effects, but these won’t affect everyone. Side effects of using adrenaline include:
- Tremor
- Reactions at the injection site such as bruising, pain and swelling
- Dizziness
- Fainting
- Headache
- Tingling feeling or feeling of numbness
- Sensation of fast or irregular heartbeat
- Muscle rigidity
- Nausea
- Vomiting
- Dry mouth
- Decreased blood supply in hands and feet in case of accidental injection into these areas
- Increased blood pressure
- Feeling weak
- Sweating
- Chest discomfort or pain
- Changes in your blood such as increased blood sugar levels, decreased potassium levels and harmful collection of acid in the body
For more information about potential side effects, refer to the patient information leaflet. If you experience any side effects, including any not included in the patient information leaflet, you can report them using the MHRA Yellow Card Scheme.
Warnings
Jext is always suitable during an allergic emergency. If you are allergic to sodium metabisulphite or any of the other ingredients in Jext, your doctor will need to instruct you under which circumstances you should use your Jext pen.
When you are prescribed Jext, talk to your doctor if you are elderly, pregnant or if your child weighs less than 15kg. Make sure to tell your doctor if you have any of the following conditions:
- Heart disease
- Overactive thyroid
- High blood pressure
- Diabetes
- Tumour on the adrenal gland (phaeochromocytoma)
- Increased pressure in the eye (glaucoma)
- Renal or prostate disease
- Low potassium levels or high calcium levels in your blood
Tell your doctor if you are taking, have recently taken or might take any other medicines, particularly medicines to treat depression, Parkinson's disease, thyroid disease, asthma, allergies and heart disease, as well as medicines that may make the heart sensitive to uneven beats, medicines that are used in labour and medicines that act on the parasympathetic nervous system.
Important information
This product is a medicine; make sure to speak to your doctor or Chemist4U pharmacist before taking this product if you have an underlying medical problem or are taking any other medicine or complementary therapy. If your symptoms get worse or continue after taking this product, contact us or your doctor. For medical services in your area, please refer to https://www.nhs.uk
If you are pregnant, trying to become pregnant, or breastfeeding, speak to your doctor or our pharmacist before taking this product. If you suffer from any allergies, ask your doctor or our pharmacist if this medicine is right for you.
Store all medicines out of sight and reach of children.
Please read the included leaflet carefully before using this product.
Please contact your GP if appropriate regarding this product.
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For further information on our medication restrictions policy, please click here.
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