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A member asked:
Allergist said if cholinergic urticaria doesn't improve, take 20 mg zyrtec; max limit is 20 mg zyrtec + 1 tab 180mg allegra (fexofenadine). safe? is it okay?
A doctor has provided 1 answer
Yes: Yes, these doses of antihistamines are safe. But make sure you stay hydrated (drink lots of water throughout the day while on this dose).
Answered 4/5/2020
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