Allergy flare-up, anyone experienced this?

Been on Wegovy 1 month now, just increased to 0.5 dosage. No issues apart from mild acid reflux and nausea. Three days before I switched to a higher dosage I had an allergic reaction to something I ate. Hives, swollen ears and eyes, red patches. No swollen throat or difficulty breathing, just very itchy.

I used to have food allergies as a teenager, prime allergy was lactose. All allergies disappeared completely over time.

From my research it shows that GLP1 can cause increased hypersensitivity of (latent) allergies, partially due to the slower digestion.

I've cut out lactose and am taking over the counter antihistamines, and am waiting for my doctor's feedback, but has anyone else experienced this?

Thank you!

I never got hives, but on tirzepatide I suddenly couldn't handle dairy the way I used to - a little milk in my coffee would leave me bloated and itchy, which never happened before. Slower gut emptying seems like a plausible culprit for old sensitivities waking back up. Cutting it out and keeping antihistamines handy got me through until things settled, so hopefully yours calms down too once your doctor weighs in.

Same thing happened to me on semaglutide around week six - got itchy red patches after eating cheese that never bothered me in years. Cutting dairy out made the difference for me, and it faded after a couple months. Good call waiting on your doctor too since the face swelling part is worth checking out.

No hives for me, but my seasonal allergies definitely got louder after starting Rybelsus - itchy skin and flushing that I'd mostly outgrown years ago. Cutting dairy helped mine settle within a week or two, so sounds like you're already on the right track. Hope the antihistamines do their job and it fades for you.

Down 23 lbs on sema myself and my teenage dairy intolerance came roaring back around month two - nothing as scary as your face swelling, but cutting out lactose completely was the only thing that shut it down. Yours sounds worse than mine was so good that the doctor is in the loop. Fingers crossed it fades like the others here are saying.

Mine never got as far as hives, but that delayed gastric emptying theory tracks with what I saw - foods just sat around long enough for my gut to have opinions about them again. Dropping dairy worked for me too, and the reactions faded over a month or two. Keep the antihistamines handy and let the doctor weigh in, especially with the swelling around your face.

Down about 25 lbs myself and my gut definitely reacts to foods I'd shrugged off for years since starting sema - nothing hives-level, but the slowed digestion theory fits what I noticed. Cutting the trigger food was what calmed things down for me too. Sounds like you're covering all the bases while you wait on the doctor.

Meal-prepping kept me from grazing on bad days.

Had a milder version on Zepbound early on - itchy skin after dairy that I figured I'd outgrown years ago. Cutting it out for a few weeks and letting my stomach calm down seemed to reset things. The facial swelling is a step beyond what I dealt with though, so good that your doctor is looped in.

Same pattern here - once I got moving on sema and dropped some weight, foods I hadn't reacted to in years started making my skin itch. It eased up as my body settled in, though I never had facial swelling like you're describing, so the doctor follow-up is a good call.

I'm down 41 lbs and my gut is way pickier than it used to be - dairy especially hits different now even though I grew out of that sensitivity years ago. Never had swelling like yours, so good that you're getting the doctor's take, but cutting lactose early sounds like it saved you some misery.

Dairy started bugging me again around month two as well, stuff I'd eaten fine for a decade. Mine never got past itchy skin but I also cut lactose for a while and it settled down. The swelling part is worth pushing the doctor on, don't let that one slide.

Same story here a few months in - foods I hadn't reacted to since my twenties started making me itchy, dairy worst of all. Skipped it for about a month and everything calmed back down. Yours sounds more intense than mine though, so definitely stay on the doctor about the swelling.

Happened to me too a few months into Zepbound - my dairy tolerance from my twenties just vanished, plus random hives from stuff that never bothered me before. I cut lactose for a while and it mostly settled on its own. The facial swelling is the part that stands out to me though, glad you're not waiting on the doctor for that one.

My money's on the slower emptying amplifying things rather than a true new allergy - when food sits in the gut longer, borderline intolerances like dairy can suddenly shout. I noticed the same pattern after years unbothered, and my allergist said there was no actual IgE response. Worth asking whether yours gets skin-prick tested so you know if it's allergy or intolerance.

Fifteen pounds down here and I hit the same thing around week three - eggs that never bothered me before had me itching like crazy for a couple weeks, then it faded without me changing much. Yours sounds bigger than mine though, so the antihistamines plus getting the doctor looped in on that swelling seems smart while you sort it out.

Similar thing hit me around the two month mark, eggs and shellfish I'd eaten my whole life suddenly left me blotchy and itchy. It faded after a few weeks of just avoiding the triggers, and I'm down 34 lbs without anything like your facial swelling happening. Hopefully yours calms down the same way once the doctor weighs in.

That matches how it went for me at similar timing - stuff I hadn't reacted to since high school flared up bigtime right after moving up doses, then quieted down within a month even though I'm still early on myself (~14 lbs lost). Watching which foods trigger it helped more than guessing, so maybe keep a quick note until the doc responds. Hope those hives ease off fast.

Mine flared right after a dose bump too, about 8 lbs in at that point, and dairy that had been fine for years suddenly gave me itchy patches for a couple weeks. It settled once I laid off the trigger, and the facial swelling you had is more than I ever got, so sticking close to the doctor on this one sounds right.

Same pattern here, mine showed up right after a dose bump too and my old teen dairy issue came roaring back for a bit. Cutting the trigger plus antihistamines got me through, and it faded within a few weeks. The swollen ears and eyes is worth pressing the doctor on though, mine never went past itchy patches.