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Doctor insights on: How Long Does It Take For Claritin To Start Working

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Dr. Andrew Murphy
Board Certified, Allergy and Immunology
23 years in practice
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How long does it take for Claritin to start working?

How long does it take for Claritin to start working?

Pretty Quickly: Most antihistamines will start to work within the first 30-40 minutes. ...Read more

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Dr. Crystal Twynham
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27 years in practice
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Dr. Ashraf Abdel Azeem
483 doctors shared insights

Claritin (Definition)

Claritin is a non-sedating antihistamine which is a kind of antihistamine type drug (common ...Read more


Dr. Michael Zacharisen
Board Certified, Allergy and Immunology
27 years in practice
4M people helped
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How long does it take for claritin-d to work.

How long does it take for claritin-d to work.

1 to 3 hours: Claritin d is a combination antihistamine [claritin= loratadine] and d= decongestant pseudoephedrine. This product is rapidly absorbed then metabolized to the active product with relief beginning within 1 to 3 hours. ...Read more

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Dr. Crystal Twynham
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Dr. Warren Wolfe
Board Certified, Family Medicine
52 years in practice
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How long does it take for Claritin to take effect on hives??

How long does it take for Claritin to take effect on hives??

Depends: If not better within 24 hours and you are getting worse, call your physician for and immediate appt or go to the ER ...Read more

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Dr. Scott Diede
Board Certified, Pediatric Hematology and Oncology
23 years in practice
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How long does it take childrens Claritin to work?

1-2 weeks: If there are absolutely no improvements in about a week, i tend to switch people over to zyrtec. It can be a little sedating for some, but I have found it to be much more effective than claritin. ...Read more

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Dr. Crystal Twynham
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Dr. Michael Zacharisen
Board Certified, Allergy and Immunology
27 years in practice
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How long it take for Claritin to work?

About 1.5 hours: Onset of clinical relief is about 1 hour for zyrtec and Allegra and about 1.5 hours for claritin. To read the study, go to: http://www.Ncbi.Nlm.Nih.Gov/pubmed/15176489. ...Read more

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Dr. John Munshower
Board Certified, Family Medicine
24 years in practice
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How long does it take for loratadine to work?

Same day: You should be able to hopefully notice some results withing the same day you take it. ...Read more

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Dr. Jeffrey Rumbyrt
Board Certified, Allergy and Immunology
26 years in practice
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How long should it take for my Claritin to work?

How long should it take for my Claritin to work?

Up to 1 hour: Claritin can work relatively quickly in most people. That is, it usually works within 30 minutes. However, in some people it may take up to 60 minutes to have its full effect. If it is not working within that time, or if the duration of effect becomes less and less, seeing an allergy specialist for allergy testing would be recommended as other treatments may be more effective. ...Read more

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Dr. Michael Zacharisen
Board Certified, Allergy and Immunology
27 years in practice
4M people helped
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9
How long does Claritin take to work?

About 1.5 hours: The onset of clinical symptom relief is about 1.5 hours for claritin. To read the study that compares this to zyrtec and Allegra go to: http://www.Ncbi.Nlm.Nih.Gov/pubmed/15176489. ...Read more

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Dr. Michael Zacharisen
Board Certified, Allergy and Immunology
27 years in practice
4M people helped
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10
How long will it take for my Claritin to kick in?

How long will it take for my Claritin to kick in?

About 1.5 hours: Onset of relief of symptoms will take about 1.5 hours for claritin. This information can also be found at: http://www.Ncbi.Nlm.Nih.Gov/pubmed/15176489 other studies show that onset could take up to 3 hours. ...Read more

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Dr. Crystal Twynham
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