A New Option for Treating Anaphylaxis¹

An adrenaline auto-injector for the immediate emergency treatment of a severe allergic reaction (also known as anaphylaxis)

What is Jext^®

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Jext^® is an adrenaline auto-injector for the immediate emergency treatment of a severe allergic reaction (also known as anaphylaxis)

It features a simple 2-step design with a retracting needle for easy use

It can be injected through the clothes or directly through the skin of the outer thigh

Jext^® is available on the Pharmaceutical Benefits Scheme (PBS) in Australia

Jext^® is available in two strengths¹:

15kg – 30kg

Jext^® Jnr 150 micrograms in 0.15mL, for patients weighing 15kg – 30kg

> 30kg

Jext^® 300 micrograms in 0.30mL, for patients weighing > 30kg

Your doctor or pharmacist may choose to recommend more or less than this amount.

Jext^® Features¹:

Two simple activation steps

Colour-coded ends to safeguard against accidental injection¹

A yellow safety cap prevents Jext^® from “firing” or working when not in use

A black needle end, extending automatically to hide the needle after adiminstration

How to use Jext^®

Watch the Jext^® demonstration video for guidance on recognising anaphylaxis and the correct administration of Jext^®

2 simple activation steps

Form a fist around Jext^® and PULL OFF YELLOW CAP

Place black tip against outer thing, then push injector firmly into thigh until it “clicks” and hold for 3 seconds

After administering Jext^® auto-Injector, always seek medical attention – call triple zero (000) for an ambulance

While waiting for the ambulance, continue to lie down with feet raised unless this makes you breathless, in which case sit up. Ask someone to stay with you until the ambulance arrives in case you feel unwell

If symptoms persist or worsen, a second Jext^® may be administered 5 to 15 minutes after the first injection

Unconscious patients should be placed on their side in the recovery position

When to use Jext^®

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Anaphylaxis is a potentially life-threatening allergic reaction and should always be treated as a medical emergency

Adrenaline (epinephrine) injected into the muscle of the upper outer thigh is the first-line choice for the emergency treatment of anaphylaxis because it works quickly to reverse the symptoms of an anaphylactic reaction

Delayed treatment can result in fatal anaphylaxis

At first sign of anaphylaxis, Jext^® should be administered immediately as instructed by your doctor or pharmacist

Swelling / Tightening of the throat / Swelling of the tongue

Wheezing / Hoarseness / Shortness of breath

Nausea / Vomiting / Stomach Cramps

Symptoms

Symptoms of anaphylaxis include:⁴

Difficult or noisy breathing

Swelling of tongue

Swelling or tightness in throat

Wheeze or persistent cough

Difficulity talking or hoarse voice

Persistent dizziness or collapse

Pale and floppy (in young children)

Abdominal (stomach) pain, vomiting – these are signs of anaphylaxis for insect allergy

For Further information

See FAQs

See Resources

REFERENCES

1. Jext^® 300 & Jext^® Jnr 150 (adrenaline (epinephrine) acid tartrate) Australian Consumer Medicine Information. Biocelect 2026

2. https://www.pbs.gov.au/medicinestatus/document/1197.html

3. Australasian Society of Clinical Immunology and Allergy (ASCIA) (2025) Anaphylaxis. Available at: https://www.allergy.org.au/patients/about-allergy/anaphylaxis (Accessed: 26 May 2026).

4. Australasian Society of Clinical Immunology and Allergy (ASCIA) (2026) ASCIA Action Plan for Anaphylaxis – Jext^®. Available at: https://www.allergy.org.au/images/stories/anaphylaxis/2026/ASCIA_Action_Plan_Anaphylaxis_Jext_2026.pdf

A New Option for Treating Anaphylaxis1

What is Jext®

Jext® is available in two strengths1:

Jext® Features1:

How to use Jext®