The Histamine Intolerance & MCAS Recovery Protocol — William Dickinson
THE HISTAMINE INTOLERANCE & MCAS RECOVERY PROTOCOL · INSTANT DOWNLOAD

You react to everything.
And you've been told it's "just allergies".

Calm your mast cells, restore your gut and nervous system, and eat freely again. These are the steps I took out of my own histamine intolerance and MCAS, in the order that works.

65 pages · 5 parts · daily tracker and worksheets · 2 recipes

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Cover of The Histamine Intolerance & MCAS Recovery Protocol by William Dickinson
1,000+
Clients worldwide
3,000+
Stool tests reviewed
10+
Years of experience
425+
Online classes

"I'm four years into my own journey and this has allowed me to understand histamine on a deeper level and fill in the knowledge gaps I was missing."

Connor B. · Verified buyer
DOES THIS SOUND LIKE YOU?

If this has become your normal, keep reading.

You've cut the tomatoes, the wine and the leftovers. You know the histamine food lists by heart. And you still react, sometimes to a food that was fine last week.

SKIN
Itching, hives or flushing that arrive out of nowhere
SLEEP
Wide awake at 3am, wired and exhausted at the same time
HEART
A racing or pounding heart after you eat, or for no reason at all
MOOD
Anxiety and panic that don't match what's happening in your life
FOOD
A list of safe foods that keeps getting shorter
UNHEARD
Allergy tests that come back clear, and nobody who can tell you why

The low-histamine diet hasn't stopped it. The antihistamines wear off after a few hours. The DAO capsules changed very little, and even "low-histamine" probiotics set you off.

It's not your fault. Nobody gave you the steps in the right order.

INTRODUCING

The Histamine Intolerance & MCAS Recovery Protocol.

A 65-page plan that takes you from reacting to everything back to a full plate. Relief first, then the repair that makes it last.

It isn't a food list, and it isn't another stack of supplements. It's the same protocol I use with my one-to-one clients, written down step by step, so you can follow it at home.

Here is what it does for you:

01
PART ONE

Know what you're dealing with

Histamine intolerance, MCAS, or both? Five simple experiments show you which one is driving your symptoms.

02
PART TWO

Find what started it

Mold, dental work, antibiotics, diet, trauma. You find the tap that is still running, because nothing holds until it is turned off.

03
PART THREE

Get relief first

Six ways to bring your symptoms down. This is where the itching, the racing heart and the 3am waking start to ease, often within days.

04
PART FOUR

Fix it for good

Repair the gut, restore the microbiome, reset the nervous system, in that order. With the exact probiotic I use, and how to dose it without flaring.

05
PART FIVE

Eat without fear

What to eat, the freshness tricks that put meat and fish back on your plate, and my method for bringing foods back for good.

06
TOOLKIT

Put it into practice

Food lists, two recipes, the daily tracker, the Flare Detective sheet, the self-test, the root cause self-audit and the phase checklists.

Three pages from The Histamine Intolerance & MCAS Recovery Protocol: the contents, the histamine cup and the daily tracker
Pages from the protocol: the contents, the histamine cup and the daily tracker.
Get the protocol — €17
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WHAT BUYERS ARE SAYING

In a buyer's own words.

"Anyone with histamine issues would greatly benefit from this. I'm four years into my own journey and this has allowed me to understand histamine on a deeper level and fill in the knowledge gaps I was missing. This has cause, issues and solution all included in an easy to understand [format]. I would highly recommend."
CB
Connor B.
Verified buyer · October 2026

Individual experience. Results vary from person to person.

Get the protocol — €17
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WHY THIS WORKS

It's not the food. It's the cup.

Once you have this picture in your head, a flare stops being a random attack and becomes a puzzle you can solve.

The histamine cup A cup filled in layers: daily metabolism, food and digestion, toxins, medications and skincare, hormones and neurotransmitters, and excess histamine on top. A dashed line near the rim marks your threshold. Stress and poor sleep pull the threshold down. What rises above it overflows, and that overflow is your symptoms. Drops falling from the bottom are the leak: how fast your body clears it. overflow = symptoms excess histamine hormones · neurotransmitters toxins · medications · skincare food and digestion daily metabolism your threshold stress, poor sleep the leak: how fast you clear it
  • What fills the cupFood, the histamine your gut bacteria make, toxins, medications, even what you put on your skin.
  • What lowers the rimStress and a bad night's sleep make the cup smaller, so the same contents have less room.
  • What widens the leakA healed gut lining, more DAO and a liver with less to do drain it faster.

Symptoms only appear when it overflows.

This is why the same meal is fine on Monday and a disaster on Thursday, and why you can eat low histamine and still react. Antihistamines only take the edge off, because they block a receptor. They don't lower the level in the cup.

Histamine intolerance is a warning sign. It tells you there is gut damage.

That is good news, because a gut can be repaired. Seal the lining, bring back the right bacteria, and the whole cascade calms down.

WHAT CHANGES FOR YOU

Imagine…

Sitting down to a meal without scanning the plate for what might set you off. Cheese and tomatoes back on the table.
Sleeping through the night, and waking up without the racing heart and the dread.
Looking at a flare and knowing what caused it, and what to change tomorrow.

No kill protocols. Nothing that leaves you on five foods for life. No fighting your own body. Just gentle steps, in the right order.

LET'S TALK ABOUT PRICE

What €17 actually is.

€17 is less than

  • One functional medicine consult €150–400
  • A stool test without interpretation €150–300
  • A single specialty probiotic €40–70
  • One bottle of DAO capsules €30–50

€17 buys you

  • The complete 65-page protocol
  • The cup tracker, worksheets and checklists
  • Food lists and two recipes
  • Every product linked directly
  • Downloadable PDF, yours to keep
Get the protocol — €17
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LET'S BE HONEST

Who this is for (and who it isn't).

This is for you if:

  • You react to food, and the list of what you can eat keeps shrinking
  • You eat low histamine and you still get symptoms
  • Itching, flushing, a racing heart, anxiety or insomnia have become your normal
  • Your allergy tests are clear, and nobody can explain what is happening
  • You want someone to tell you exactly what to do, step by step

This is NOT for you if:

  • You want a quick fix. This took me years, and I'd rather give you the truth than a promise.
  • You only want a food list. The lists are in there, but they are the smallest part.
  • You've ever had anaphylaxis and want to do this without your doctor. In that case everything here needs medical supervision.
  • You want to stop your medication. This works alongside medical care, not instead of it.
William Dickinson, gut health coach
WHO I AM

I'm William Dickinson.

I'm a gut health coach from the UK, living in Portugal and working online with people all over the world. For more than ten years this has been my whole working life: more than 1,000 clients, more than 3,000 stool tests reviewed, more than 425 online classes, and a new video on YouTube every Tuesday.

I didn't come to this from a textbook. I lived it: years on the same five foods, wide awake at night, reacting to almost everything. The DAO capsules did nothing for me.

What changed was the question. I stopped asking how to block the histamine, and started asking why my body was releasing it. This protocol is what I worked out along the way, and it's what I use with my one-to-one clients.

If you've ever been told it's all in your head, or been sent home with another antihistamine, you're exactly who I wrote this for.

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HONEST ANSWERS

What you're probably wondering.

Do I have histamine intolerance or MCAS, and does it matter?

Histamine intolerance is a clearance problem: not enough DAO, so histamine from food and gut bacteria builds up. MCAS is a release problem: mast cells firing too readily. Many people have both. It changes how you eat, and the guide covers each, but the fix is the same organ either way: the gut. Part 1 gives you five simple experiments to tell them apart.

I already eat strictly low histamine and I still react. Will this help?

That's exactly who I wrote it for. Food histamine is only one input. Your gut bacteria make histamine whether you eat any or not, a bad night's sleep lowers your threshold, and any food you're sensitive to makes your mast cells release histamine even if it contains none.

I react to almost everything, even probiotics. Where do I start?

Smaller than you think. You shrink first, then rebuild: a small zone of safe foods, protected sleep, and one step at a time from there. The starting doses are tiny on purpose, and nothing new is added until the step before it is tolerated.

How long does it take?

Symptom relief is often noticeable within days once you're managing the cup. The gut lining can change meaningfully in four days to four weeks. Real microbiome repair takes months. Faster comes from staying under your threshold, not from pushing.

If this is what you use with clients, why is it only €17?

Because I give the information away for free on YouTube and always will. What you're paying for is having it organised: the steps in the right order, with the toolkit, in one place you can print and keep.

How is it delivered?

Instant PDF download after checkout, with the link also emailed to you. 65 pages, A4. Read it on any device: no app, no login, no subscription. It's yours to keep.

Is this medical advice?

No, and the guide says so clearly. It's educational content based on my own recovery and my work with clients, with a red-flags page on when to get medical help. Never stop a prescribed medication without your doctor, and if you've ever had anaphylaxis, do this only under medical supervision.

YOUR NEXT MOVE

Your body isn't broken. It's defending you.

Remove what your body is reacting to, rebuild what was lost, and the cascade calms down. I've walked this path myself, and this is the map.

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© William Dickinson. Not medical advice. This guide is educational content based on coaching experience and does not replace consultation with a qualified medical professional.

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