Buy EpiPen online in UK from our registered online pharmacy. NHS and private prescriptions are available with next day delivery service in discreet packaging.


5/26/2025 9:13:51 PM


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EpiPen Auto-Injector

EpiPen is used to treat sudden life-threatening allergic reactions (also known as anaphylactic shock) to things like foods, drugs, or insect bites and stings.

Medication features:

  • Adrenaline auto-injector (AAI)
  • Emergency treatment for severe allergic reaction “anaphylaxis”
  • Pen-shaped applicator

If you are ordering for a school -

Vist our EpiPen for Schools page. 

Next Day Delivery Available

UK Registered Pharmacy

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Expected Delivery: Wednesday

If you order within: 12h36m

EpiPen Prices

  • Medicine prices
  • Delivery Information
Medicine 1 pen 2 pens
EpiPen 0.3 mg £74.99 £139.99
EpiPen 0.15 mg £72.99 £134.99

Prices include free private prescription.

Delivery charges

Orders approved by our medical team before 3pm Monday – Friday are dispatched the same day via Royal mail. All orders are sent using a tracked and signed for service. Orders are not dispatched on weekends and bank holidays.

Royal Mail 1st Class | £3.95

Delivered within 1-3 working days. Excludes bank holidays. A tracked service with signature required on delivery.

Royal Mail Special Delivery Guaranteed before 1pm | £6.95

Delivered within 1 working day before 1pm. Excludes Sundays and bank holidays. A tracked service with signature required on delivery.

Find out more about our delivery service.

Refunds and returns – Read further information on return and refunds.

  • Overview
  • Directions
  • Cautions
  • FAQ

Buy EpiPen Online UK

You can order Epipen online in the UK from our registered pharmacy. Complete the online medical assessment to be reviewed by one of our prescribers. If approved, your medication will be dispensed by our pharmacy team for next day delivery to your address.

About EpiPen

EpiPen is an adrenaline auto injectors (AAI), used to treat life-threatening allergic reactions, known as anaphylaxis. It occurs when your immune system overreacts to a harmless substance such as food or medication. It can also happen as a result of insect stings, exercise or exposure to latex.

The EpiPen administers a single dose of epinephrine, also known as adrenaline, to control symptoms of anaphylactic shock. 

Is EpiPen effect?

EpiPen auto injector is a life saving medication for people who experience anaphylaxis. It is highly effective and provides immediate relief from anaphylactic shock, severe allergic reactions and symptoms such as wheezing and difficulty breathing within minutes. The medicine in EpiPen works directly on the cardiovascular and respiratory system by making the blood vessels smaller and relaxing the muscles in the lungs to improve the breathing process, stimulating the heart and reducing swelling.

Key facts about EpiPen

Type of medicine

Adrenaline - Anaphylaxis treatment


Treats life-threatening allergic reactions or anaphylactic shock

How it works

Helps reduce allergic reaction by:  relaxing the muscles in the airways to make breathing easier, reduce swelling and stimulate heartbeat.

Active Ingredient


Directions of use

Inject pen into the outer thigh as directed when required

Available strengths

0.3mg (Adult), 0.15mg (Junior)

Side effects

Common side effects include dizziness, anxiety, headache, sweating, irregular heartbeat, increased blood pressure



The information provided in the summary table is for reference only. It is important to consult a qualified healthcare professional before starting any anaphylaxis treatment, including Epipen.

How does EpiPen work?

During an anaphylactic shock, the chemicals that flood your system in response to the allergen cause the blood pressure to drop and the airways to narrow, resulting in difficulty breathing. The adrenalin administered via the EpiPen auto injectors works to counteract this fatal reaction by first constricting blood vessels to reduce swelling and increase blood pressure. It also relaxes the lungs and throat, making breathing easier and, stopping any further release of chemicals and preventing the reaction from continuing.

Alternatives to EpiPen

EpiPen and Jext auto-injectors are two different brands of adrenaline auto injectors available in the UK to treat severe allergic reactions. Both contain the same medicine, come in the exact dosage of 0.3mg and 0.15mg and serve the same purpose, but their mechanism is slightly different.

After jabbing it into the thigh, you need to hold the EpiPen for 3 seconds. To use Jext auto-injector, you need to keep the injector in place for 10 seconds and, after removing it, massage the injected area for 10 seconds.

EpiPen 300mcg is appropriate for people above 25kg, and EpiPen Jr is for those weighing between 7.5 to 25kg. On the other hand, Jext 300mcg is for patients above 30kg and Jext 150mcg is designed for patients who weigh between 15 to 30kg.

EpiPen for children

EpiPen Jr is specifically designed to treat severe allergic reactions in children and delivers a smaller dose of 0.15mg of adrenaline. It is suitable for children weighing between 7.5 to 25kg. The process of administering EpiPen Jr is exactly similar to EpiPen.

There is no visible needle to help those who fear injections. By the age 12 – 14, most doctors expect the children to be able to use an EpiPen. Ask your child to practice with an EpiPen Training Device similar to EpiPEn Jr but has no needle or medicine.

Symptoms of Anaphylaxis

Anaphylaxis usually starts with normal allergic reactions, including skin rash, runny nose or itchiness in the eyes or face. Within 30 minutes, more severe symptoms appear, which may include:

  • Coughing
  • Swelling
  • Shortness of breath
  • Hives
  • Hay fever (allergic rhinitis)
  • Difficulty swallowing
  • Chest tightness
  • Rash
  • Abdominal pain
  • Diarrhea
  • Chest tightness
  • Cramps
  • Vomiting
  • Wheezing

If you notice symptoms, immediately get medical help or use your adrenaline auto injector. Without the treatment or any delay may cause more severe, life-threatening anaphylaxis symptoms:

  • Drop in blood pressure
  • weak pulse or confusion
  • Sudden weakness
  • Increased heart rate
  • Shock
  • Unconsciousness

Epipen dosage instructions?

The ideal dose of adrenaline depends on your body weight, and your GP will prescribe it to you.

  • EpiPen delivers a single dose of 0.3mg of adrenaline and is for a person weighing over 25kg (3 stone - 13lbs).
  • EpiPen Jr. has a dose of 0.15 mg and is intended for children weighing between 7.5 to 25kg (1 stone – 3lbs to 3 stone – 13lbs).

In case of a life-threatening allergic reaction, you may need to administer more than one shot of EpiPen five to fifteen minutes after the first. If you suffer from severe allergies ensure you have access to two auto injectors in case of an immediate medical attention as 35% of patients may require more than one adrenaline dose.

How should I use an EpiPen?

If your doctor prescribes an EpiPen, ensure you fully understand its reason and the symptoms of anaphylaxis. You should know precisely how and when to use it.

Carefully learn how to use an EpiPen. It is designed in a way that people without medical training can even administer it. Adrenalin is supplied in a pen-shaped applicator with an enclosed needle.

  • To administer the epinephrine, the patient should be in a comfortable position or lie flat.
  • People having breathing difficulty should sit up straight, and pregnant women should lie on their left side.
  • Remove the blue safety release from the EpiPen.
  • Jab the orange side of the EpiPen from about 10 centimetres with the right angle into your mid-outer thigh muscle, through clothes if necessary.
  • Once it clicks, hold it in place for a full 3 seconds.

You should immediately seek medical help after administering the EpiPen by dialling 999. Ask for an ambulance and state anaphylaxis. If required, you may need to go to the hospital for further observation and treatment, as about 20% of patients will develop a biphasic anaphylactic response many hours later.

For more detailed instructions on how to use the adrenaline auto injector, follow the guidelines that come with your device or watch this video on how to use an EpiPen.

How to store EpiPen?

You must store the EpiPen correctly to ensure you receive the full benefit of your epinephrine upon administration. The following are recommendations as to how to store your medication optimally:

  • Do not refrigerate
  • Store at room temperature below 25°C
  • Keep away from sunlight
  • Do not store in a car during hot or cold weather
  • Keep the EpiPen in its carrier tube
  • Make sure the medicine is clear and colourless

Side effects of EpiPen

Like all medicines, the EpiPen auto injector may cause some side effects, but not everyone gets them. Within five to 10 minutes of taking this medication, you may experience one or more of the following:

  • Heart palpitations
  • Dizziness
  • Anxiety
  • Tremors
  • Headache
  • High blood pressure
  • Irregular heartbeat
  • Difficulty breathing
  • Paleness
  • Hypertension
  • Sweating
  • Weakness
  • Nervousness
  • Apprehension
  • Vomiting or nausea.
  • A rare side effect is Cardiomyopathy, which may affect 1 in 1000 patients treated with adrenaline.

EpiPen auto injector contains sodium metabisulphite (E223), which may rarely cause severe allergic reactions (hypersensitivity) or breathing difficulty.

Most drugs have some kind of side effect, and though uncommon, it is necessary to be aware of them to know what to do if they occur. If you experience any of the above and/or any other issue resulting from the EpiPen, it is important not to panic, as these side effects usually pass quickly with rest. If the side effect is more extreme, contact your doctor immediately or call 999.

Side effects can last longer in patients with high blood pressure and thyroid conditions, so use an EpiPen auto injector with caution in these situations.

If you are concerned about possible side effects, consult your doctor for advice or get in touch with one of our pharmacists at Click Pharmacy.

Can you use EpiPen while pregnant?

Epinephrine should be administered only in a situation when not doing so could cause more damage to the mother and baby than doing so. There is limited research in this area, but since the anaphylactic shock is dangerous for the unborn baby and the mother, keeping and using an EpiPen auto injector for extreme situations is essential.

Speak to your GP or a Pharmacist at Click Pharmacy to discuss any concerns you may have.

What is the difference between EpiPen and EpiPen Jr?

EpiPen Jr is formulated for young children weighing less than 25kg. Any child weighing above 25kg should use an EpiPen.

Can I buy an EpiPen over the counter?

EpiPen auto injector is a prescription-only medication in the UK. You can buy EpiPen from any UK pharmacy if you have a valid prescription or our prescriber can prescribe it after you have filled out a short medical assessment and paid the EpiPen cost as per our website. 

When should I inject an EpiPen?

An EpiPen should be injected at the first sign of any known or suspected severe allergic reaction to prevent life threatening issues. 

How long should I hold the EpiPen in place for?

In order to rightly deliver your dose, EpiPen should be firmly held in place for 3 seconds.

How should I inject my EpiPen?

Place the orange tip perpendicular to the outer thigh, push the auto-injector until you hear a click, the click signals activation of the EpiPen

Can I inject an EpiPen through my clothes?

Yes, if necessary. 

What should I do if I accidentally open the safety cap?

Opening the blue safety cap signals for activation of the EpiPen, therefore it should be discarded. 

If for some reason the EpiPen has not been activated, even after removing the safety cap, the needle can be gently placed back into its carrier tube and securely fastened using the blue safety cap. 

What should I do if the liquid in my EpiPen begins to discolour?

The liquid in your EpiPen should always be clear and colourless. Immediately replace your EpiPen if you see any signs of:

  • Discoloured liquid
  • Damage or leakage
  • Solid precipitate

Can I travel with my EpiPen?

It is vital to always have your EpiPen with you when travelling.

Airlines often require you to previously provide a letter of notice, if you are expected to be carrying an EpiPen with you. 

EpiPen Reviews

How to order medications from us

Order your medication in a few clicks. Our process is easy, fast and secure.

Step 1

Short Medical Assessment

Fill out a questionnaire so our prescriber can assess if the treatment is suitable for you.

Step 2

Select Preferred Medication

Choose the medication you require from the range offered by our online pharmacy.

Step 3

Next Day

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Price £74.99

Price Checker


Available strengths:

0.3 mg 0.15 mg


Price £74.99

Includes free private prescriptions

In stock

2024/05/26 2024/05/27

Order before 15:00pm (Monday to Friday) for next day delivery