What is Anaphylaxis?

Anaphylaxis (pronounced ana-fil-ax-is) is a serious and often sudden allergic reaction. It can occur when someone with allergies is exposed to something they are allergic to (known as an allergen). Reactions usually begin within minutes and rapidly progress but can occur up to 2-3 hours later.

Anaphylaxis is potentially life-threatening and always requires an immediate emergency response.

If you have experienced a sudden allergic reaction in the past, then you may be at risk of anaphylaxis even if you have not had anaphylaxis before. We advise that you see your GP and ask for a referral to an allergy clinic.

A diagnosis of anaphylaxis can be daunting at first, but by becoming well-informed, thinking ahead and employing daily coping strategies, people affected find that life can return, almost, to normal.

Supporting People With Serious Allergies

Here are some of the ways we support people to manage day-to-day life with a serious allergy.


About Anaphylaxis UK

Anaphylaxis UK is the only UK-wide charity operating solely for the growing numbers of people at risk of serious allergic reactions and anaphylaxis. While there’s no treatment or cure for anaphylaxis, we believe that by providing information, training and support, there is a brighter future for people living with serious allergies.


Our mission is to create a safe environment for everyone with allergies by working with and offering training for the food industry, schools, pre-schools, colleges, health professionals and other key groups.

At work

Stay in the know with our free monthly newsletter

Sign up

Training & Education

Is Your School AllergyWise?

We offer training for teachers and all school staff. We encourage a whole school allergy awareness approach – the more staff who understand allergy and how to recognise an allergic reaction, the more likely your school will be able to safely manage allergic pupils.

Check with your school and ask if they have done our training.

Ways you can help

There are many ways that you can get involved with the vital work we do! Your support has a huge impact on the lives of people with serious allergies.


Your time is as valuable as your donations, so explore the button below to discover all the ways you can help us further our mission of securing a brighter future for people at risk of anaphylaxis.

Living with Serious Allergies

Guidance for Parents

If you're a parent, explore our guide all about teaching children how to live with food allergies and educating them about anaphylaxis.

Managing Allergies at University

As you leave for university, it might be the first time you’ve had to manage your allergies on your own. Make the transition a bit easier with Anaphylaxis UK.

Shopping & Preparing Food

If you or a member of your household has a food allergy, there are precautions you can take while shopping or preparing food at home to ensure food safety.


Allergies can be stressful, especially when you’re in a busy airport or in new and unfamiliar surroundings. Follow our top tips and be as prepared as possible to stay safe and confident while travelling.

Allergy Outlook is our monthly newsletter

Sign up for free

Latest News from Anaphylaxis UK

Below are all of our latest news posts. Click through to read more.

Increase in children’s allergy services in the UK 17th August 2022

A comprehensive survey of children’s allergy services in the UK has found that the number of clinics and appointments have increased but that services vary too widely across the country.  Researchers contacted UK hospitals to find out what allergy services

Read more
New guidelines to help patients with Pollen Food Syndrome 17th August 2022

The British Society for Allergy and Clinical Immunology (BSACI) has announced the publication of the BSACI Guideline for the diagnosis and management of Pollen Food Syndrome/Oral Allergy Syndrome. Pollen Food Syndrome (PFS), also known as Oral Allergy Syndrome, is a

Read more
A New Practical Guidance on the Application of Food Allergen Quantitative Risk Assessment Published 15th August 2022

The Expert Group on ‘Food Allergen Quantitative Risk Assessment (QRA)’ have produced guidance to help harmonise the data gathering process for food allergen risk assessments and aid with their implementation. The Guidance aims to promote consistency in documentation, decision making

Read more

Allergy Alerts

Milk Alert – Linda McCartney 2 vegetarian 1/4lb burgers 11th August 2022

Product Name: Linda McCartney 2 vegetarian 1/4lb burgers Pack Size: 227g Batch Codes: 20922, 21022 and 21122 ‘Best before end’ date: January 2024 We have been alerted by Linda McCartney Foods that they are recalling their Linda McCartney 2 vegetarian

Read more
Mustard Alert – Asda Italian Inspired Chicken and Bacon Pasta Bake (800g and 400g) 25th July 2022

Product Name: Asda Italian Inspired Chicken and Bacon Pasta Bake 800g (Barcode: 2742248) AND Asda Italian Inspired Chicken and Bacon Pasta Bake 400g (Barcode: 505717226358)  Use By: 29 July 2022 and 30 July 2022 We have been alerted by Asda

Read more
Fish Alert – Munch Chicken and Bacon Caesar wrap 21st July 2022

Product Name: Munch Chicken and Bacon Caesar wrap Use By: All dates up to and including 23 July 2022 We have been alerted by the Food Standards Agency that Munch is recalling its Munch Chicken and Bacon Caesar wrap because

Read more