Meet the Other Phone. Child-safe in minutes.

Meet the Other Phone.
Child-safe in minutes.

Buy now

Please or to access all these features

Allergies and intolerances

Mumsnet doesn't verify the qualifications of users. If you have medical concerns, please consult a healthcare professional.

Quorn intolerance??

39 replies

Jessie2024 · 30/07/2025 11:08

I don’t even know if this is a thing or not, but I think I could have a quorn intolerance. I’ve been vegetarian for years and I’ve always had quorn, but then the past few weeks I’ve eaten food with quorn in and thrown up a couple of hours later, each time. I didn’t make the correlation immediately and I actually thought it was eggs at first (one of the melas was a veggie chicken omelette), but last night I threw up again after a veggie chicken pie and the only thing linking all three meals is the quorn. Has anyone ever heard of this? Is it a common thing?

OP posts:
Dolamroth · 30/07/2025 11:11

Is Quorn the one made from fungus? If so yes I've heard quite a few can't eat it because it makes them ill.

DarnTooting · 30/07/2025 11:17

DH is allergic to certain mushrooms, including the ones used in Quorn. Thankfully it’s projectile vomiting rather than anaphylaxis but still not nice for anyone

DocofAges · 30/07/2025 13:07

I can’t eat it. Last time I tried my stomach expanded and I had hours of pain. It’s the mushroom/fungus that causes the intolerance for me.
My daughter can’t handle it either but she has a different problem, hives and swollen lips - she’s allergic to egg and apparently the mushrooms are grown on chicken manure which is sometimes contaminated with cracked eggs.
Quorn is never on the menu here!

Jessie2024 · 30/07/2025 13:31

@Dolamroth yes I believe it is! I never actually researched it until this issue, but I’m not surprised it can cause issues if it’s a fungus

OP posts:
Jessie2024 · 30/07/2025 13:32

@DarnTooting I’m wondering if I’m the same, how can you find out what exactly you’re allergic to? It’s projectile vomiting for me as well, each time I’ve had quorn this month I’ve vomited up EVERYTHING

OP posts:
Jessie2024 · 30/07/2025 13:33

@DocofAges omg chicken manure?! That’s me never letting my daughter eat quorn again!!

OP posts:
applegingermint · 30/07/2025 13:34

I have no food allergies nor intolerances but quorn makes me violently vomit.

MagpiePi · 30/07/2025 13:38

Not quite as dramatic but quorn gives my son diarrhoea.

Jessie2024 · 30/07/2025 13:45

@applegingermint same!! It must be a common thing then. Are you okay with other vegetarian meat alternatives? I know some veggie chicken is made from soya rather than quorn.

OP posts:
Jessie2024 · 30/07/2025 13:45

@MagpiePi I had no idea how much quorn gave people issues, I’ll definitely avoid for the whole household I think

OP posts:
OllieWoodyGigiAndDolly · 30/07/2025 13:49

I don’t know if it’s particularly common with quorn, but you can become allergic/intolerant to any food at any time. One of my friends became allergic to beef and tomatoes in her 30s and a work colleague to pork in her 40s, both seemingly overnight. Their doctors said it’s fairly common with foods in general. 🤷‍♀️

Scampuss · 30/07/2025 13:55

It's very common for quorn to cause gut issues.

And it's not grown on chicken manure*! It's grown in massive vats in factories.

*The sort of mushrooms you buy in supermarkets are typically grown in sterilised compost.

youalright · 30/07/2025 13:58

Really common google it a lot of people cant eat quorn.

SnugglyJumpersMakeItBetter · 30/07/2025 14:01

It makes me vomit too. I just find it odd that it makes SO MANY people sick and they still sell it as an ordinary food, no warning or anything!

Personally I'm fine with soya or pea-protein based 'fake meat' so that could be an option?

Ebenezerscrogge · 30/07/2025 14:07

Vegetarian for years and yes some people are definitely sensitive to quorn and get gut issues - tofu ( tofoo brand is nice ) might be an alternative

youalright · 30/07/2025 14:10

SnugglyJumpersMakeItBetter · 30/07/2025 14:01

It makes me vomit too. I just find it odd that it makes SO MANY people sick and they still sell it as an ordinary food, no warning or anything!

Personally I'm fine with soya or pea-protein based 'fake meat' so that could be an option?

Im glad they still sell it but you would of thought it would be more common knowledge but then I suppose its not the best advertising. Try our delicious golden battered quorn nuggets warning ⚠️ may make you vom 🤮 or 💩 through the eye of a needle. Enjoy 😁

OllieWoodyGigiAndDolly · 30/07/2025 14:15

SnugglyJumpersMakeItBetter · 30/07/2025 14:01

It makes me vomit too. I just find it odd that it makes SO MANY people sick and they still sell it as an ordinary food, no warning or anything!

Personally I'm fine with soya or pea-protein based 'fake meat' so that could be an option?

I think there is a warning on quorn food labels. I know Tesco has a warning under allergy info on their website.

Things like cows milk and shellfish are more common food allergies and they still sell them with a warning, so no different really. Most people will be able to eat quorn without an issue.

Anyone can be allergic or intolerant to anything but it’s still sold as it’s ok for the vast majority.

Bigpinkslippers · 30/07/2025 14:25

Makes me vomit too. Took 3 times before I made the connection. Doesn't affect any of my kids or siblings, just me.

Aussiegold · 30/07/2025 14:31

Vomit and/or diarrhea depending on how much I have eaten. Took YEARS to work out what was making me ill.
I have seen estimates of up to 30% of people have an intolerance of it.

PollyannaWhittier · 30/07/2025 14:36

Quorn has a TERRIBLE effect on my bowels ! I discovered this on Guide camp, which was kind of awkward 😅. I had a massive argument with my home ec teacher when we were learning about alternative proteins because I refused to eat the Quorn dish; she was adamant that you can't be intolerant to it.

GoToMaine · 30/07/2025 14:54

Most of my friends and lots of my family are vegetarian or vegan and most eat some quorn without issues. One friend does get stomach ache after it but she has lots of food intolerances which is why she became vegan in the first place. She started to have issues with most meats, eggs, dairy, peppers, celery and lots of other foods. She sees a dietician regularly and was told around 2% do people have a problem eating quorn. She eats tofu and other meat substitutes without a problem.

ArtichokeSurprise · 30/07/2025 15:38

I stopped eating Quorn more than twenty years ago because it makes me vomit too, three to five hours after eating it. Like the OP, it took a while to make the connection :-(

XXLfiles · 30/07/2025 15:44

There was a discussion that with so many people having reaction to it, it should have h
warnings on. I am fine with it, just bloat, DH projectile vomits.

PolitePoster · 30/07/2025 15:51

Nothing as dramatic as vomiting, but my DH and one of the Dgds can't eat Quorn either. They both get stomach aches within a few hours and then diarrhoea the next day.
I and DS (the child's father) have eaten Quorn for years without any trouble.

gigglygrace · 30/07/2025 15:52

applegingermint · 30/07/2025 13:34

I have no food allergies nor intolerances but quorn makes me violently vomit.

Same here!

Swipe left for the next trending thread