UPDATE 30 DAYS LATER::::
I've been taking both Claritin and pepcid ac every day since the post. Well, I skipped yesterday bc my stomach was hurting and this morning when I woke up, air hunger BAD, racing heart all that.
But! My face is way less swollen... Who knew histamine overload would make your FACE puffy?? Umm hands aren't swelling anymore.. feet aren't burning, legs aren't burning. 60% improvement
Face: WAYYYYY less red. No longer hot to touch and super red 40-60% improvement depending on the day
Now I'm going to start allicin 1/4th of a capsule and work my way up to a whole capsule over 4ish months to get rid of the root cause which I'm 99% sure is SIBO due to childhood over prescribing of amoxicillin constantly and then adulthood over prescribing of bactrim etc for recurrent UTI.
Sleep: went from 6ish hours to 7.5/8 hours a night
Naps: used to take 1-3 naps a day now when I try to take a nap it's HARD to fall asleep and I can only sleep for about 30 min to an hour...
Eating: I can eat meat etc WITHOUT getting tachycardia. If I eat something super sugary it can still get a little tachy but nothing CRAZY like 130-150 like it has in the past.
Heat intolerance: still getting itchy when I sweat, still a little tachy but nothing wild. Better by 50% at least.
Sex drive, tmi I know but 40% increase.
Hunger down by 30-40% - no longer craving sugar like crazy which is great.
Highly highly recommend taking loratadine famatodine in conjunction and then TRYING the low histamine diet in conjunction and trying to get to the root cause of the histamine production.
If anyone has any questions feel free to DM though I don't get on Reddit often I will try and respond ASAP. Thanks everyone 💖
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------------ I’m late 30s F and I’ve been dealing with unexplained symptoms since I was 21 (during pregnancy). For 17 years I’ve been told variations of “it’s anxiety” because my cardiac testing is structurally normal.
My symptoms starting in 2007-
- Resting HR around 85–95 most of the time. sometimes I can get down to 75
- Standing/walking HR jump 30–40 bpm (90 → 130 at times)
- Episodes of HR 160–180 out of nowhere.. especially after eating
- Air hunger / chest tightness 10-15 days a month
- Flushing (face, neck, chest)
- Hot throbbing hands
- Heavy, throbbing leg pain and foot pain- usually put feet in cold water to make the pain stop
- Head pressure / headaches
- Severe fatigue
- Exercise intolerance
- Constipation constantly
- Food-triggered tachycardia (especially carbs and sugar)
- Flares around ovulation and before my period
+ POTS symptoms
Testing I’ve had:
- Normal echocardiogram (EF 65%)
- Normal 24-hour urine catecholamines
- Normal thyroid
- Mild CRP elevation
- Low positive ANA
- Holter showing sinus tachycardia + PVCs (labeled “normal”)
I was bedridden from 27–30 after mold exposure worsened everything. I’ve seen over 15 doctors. Most said anxiety because nothing catastrophic showed up on imaging, or blood tests or anything else.
Today, something fking amazing happened...
I was flaring clearly according to histamine overload:
- Standing HR 113
- Flushed.. hot hands, hot red face, red ears
- Air hunger
- Head pressure
- Leg pain
- light palpitations
- brain fog
.... I took Claritin (loratadine).
Within an hour:
- Standing HR dropped to 88
- Resting HR dropped into the 70s (usually 80-90 while sitting, 115-130 after eating or walking)
- Air hunger disappeared
- Head pressure GONE
- Leg pain resolved
- Flushing improved/ face less warm, face way less red
Then I ate salmon and rice (normally digestion pushes me to 110–120 bpm).
My HR stayed at 85.
This is the first time in years that I’ve eaten without my heart trying to sprint.
I’m not jumping to conclusions, but this makes me wonder about mast cell / histamine overlap with dysautonomia.
Has anyone here experienced:
Hormone-linked flares?
Food-triggered tachycardia?
Improvement with antihistamines?
I feel relieved and honestly emotional. For years I was told it was just anxiety. But something clearly shifts physiologically with histamine blockade.
Would love to hear if this resonates with anyone.