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A member asked:
How long does claritin (loratadine) take to work?
A doctor has provided 1 answer
About 1.5 hours: The onset of clinical symptom relief is about 1.5 hours for claritin (loratadine). To read the study that compares this to zyrtec and Allegra go to: http://www.Ncbi.Nlm.Nih.Gov/pubmed/15176489.
Answered 5/14/2018
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