A member asked:

For how many weeks can i use trantrin (cetirizine)?

A doctor has provided 1 answer
Dr. Mark Roberts answered

Specializes in Family Medicine

As long as it works : Some antihistamines lose effectiveness over periods of continuous—or even continual—use. Therefore, you may need to change to another OTC brand for relief. I would not take any antihistamine if it is not needed, however. Stay healthy, and I hope this helps.

Answered 8/29/2020

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