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A member asked:

Is it possible to become adjusted to allegra (fexofenadine) (fexofenadine hci (180 mg)) so that it becomes less effective over time?

A doctor has provided 1 answer

Yes: No antihistamine is perfect and it can lose its effectiveness over time in some individuals.

Answered 7/15/2014

3.9k views

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Which one is more effective or works faster and better ; zyrtec or Allegra (fexofenadine). Claratin not working for me.

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My skin has been itching from quite a long time. I have takena lot of medicines but could not find a permanent fix. I took cetrizine and allegra (fexofenadine) 180 for over a year. What should I do?

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Are there any new, more effective allergy meds than zyrtec, claratin, allegra (fexofenadine)...etc.?

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How come only allegra (fexofenadine) is effective with my food allergies, but no other product works? I don't have indoor/outdoor or seasonal allergies. Only food.

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