r/HistamineIntolerance is a subreddit with 40k members. The most common kinds of discussions are advice requests and pain & anger, and the community frequently discusses histamine intolerance, histamine, symptoms, struggling, and food, and they frequently recommend/review antihistamine, antihistamines, and magnesium.
For questions and information about Histamine Intolerance and other Mast Cell disorders. This subreddit is for research purposes only. Please do not take medical advice from this subreddit. If you have any medical issues please visit a licensed doctor.
Popular Themes in r/HistamineIntolerance
#1
Advice Requests
: "Birth control destroyed my DAO enzyme for 20 years. I was booked for sinus surgery. Here's what actually fixed it."
22 posts
#2
Pain & Anger
: "confirmed: my brain fog is 100% coming from my gut. now what?"
10 posts
#3
Solution Requests
: "Healed your HI? How did you do it? Seeking solutions!"
3 posts
Popular Topics in r/HistamineIntolerance
#1
Histamine Intolerance
: "After one year of eating less than 20 food items, I’m finally better! My experience and everything I learned about gut issues (Histamine Intolerance included)"
106 posts
#2
Histamine
: "For anyone overwhelmed with Histamine intolerance right now"
82 posts
#3
Symptoms
: "Probiotic making histamine Symptoms worse?"
33 posts
#4
Struggling
: "Do antihistamines make me feel emotionally flat or does histamine make me feel good in some ways?"
33 posts
#5
Food
: "I found the root cause.. of my itching.. it its histamin but not from the Food.."
17 posts
#6
Diet
: "intolerance got way better with more histamine in Diet"
17 posts
#7
Supplements
: "Histamine Intolerance Supplements"
13 posts
#8
Tired
11 posts
#9
Treatment
: "Probiotics really helping"
11 posts
#10
Allergies
10 posts
Products Discussed in r/HistamineIntolerance
Antihistamine
51 reviews
#1
Allegra
4.0★ from 8 reviews
#2
Claritin
3.4★ from 5 reviews
#3
Zyrtec
4.2★ from 5 reviews
Antihistamines
13 reviews
#1
Loratadine
4.0★ from 4 reviews
#2
Claritin
4.0★ from 2 reviews
#3
Stinging Nettle
5.0★ from 1 review
Magnesium
12 reviews
#1
Magnesium Glycinate
4.0★ from 2 reviews
#2
Magnesium Oxide
4.0★ from 1 review
#3
Tauromag
5.0★ from 1 review
Member Growth in r/HistamineIntolerance
Yearly
+12k members(41.2%)
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About
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Last updated: June 7, 2026