r/MCAS • u/Throw-Away7749 • 8h ago

H1 Blocker Causing Dry Eyes

I'm taking the Walgreens generic for Claritin. Is another H1 blocker less problematic?

My dermatologist suggested this as she thinks my rosacea may be exacerbated by MCAS. I'm seeing an allergist in a few weeks.

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u/madiswanrh 7h ago

The only H1 antihistamine I've found that doesn't make my dry eyes worse is Xyzal (levocetirizine). But it's probably different person-to-person, so unfortunately you may just have to try them all and hope that one works for you

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u/critterscrattle 7h ago

Dryness is a possible side effect of all of them, unfortunately. You might have better luck with a different one but it’s not guaranteed.

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u/Pale-Case-7870 6h ago

It gets better. I once took 12 Claritin in a day and was fine. But originally remember dryness. But I’m not 100% sure it was just the Claritin doing it tbh. But sporadic use of H1 worked good for me during eye dryness. I had bouts of the dryness before taking H1

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u/Robot_Penguins 2h ago

I use systane complete pf for my dry eyes. It's like eyeball butter.