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A member asked:
I took a allergy pill zyrtek but it doesn't seem to be working. how long can do i have to wait to take some bendryl?
A doctor has provided 1 answer
Zyrtec (cetirizine): Try taking zyrtec every 12 hours, if one tablet isn' t working. Less side effects than with benadryl (diphenhydramine).
Answered 9/4/2013
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