1 doctor weighed in:

How long does Claritin (loratadine) take to work?

1 doctor weighed in
Dr. Michael Zacharisen
Internal Medicine - Allergy & Immunology

In brief: 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.

In brief: 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.
Dr. Michael Zacharisen
Dr. Michael Zacharisen
Thank