No best: In general zyrtec works faster but may cause drowsiness, Allegra (fexofenadine) takes an hour to have effect but does not cause drowsiness. Whatever works for you is the best for you.
Answered 6/24/2014
4.9k views
Lots of choices: There are a number of good antihistamines- claritin, (loratadine) allegra, zyrtec, clarinex, xyzal- each with their own profile. If the medication works and does not cause significant side effects then that is probably a good choice.
Answered 1/12/2016
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