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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
24 years in practice
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1
How long does it take for Claritin to start working?

Dr. Andrew Murphy
Board Certified, Allergy and Immunology
24 years in practice
2M people helped
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. Eric Weisman
Board Certified
31 years in practice
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Dr. Eric Weisman
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31 years in practice
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Dr. Ashraf Abdel Azeem
492 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
28 years in practice
4M people helped
2

2
How long does it take for claritin-d to work.

Dr. Michael Zacharisen
Board Certified, Allergy and Immunology
28 years in practice
4M people helped
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. Eric Weisman
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31 years in practice
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Dr. Eric Weisman
Board Certified
31 years in practice
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Dr. Alan Gorenberg
Board Certified, Allergy and Immunology
30 years in practice
35K people helped
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3
How long does it take for Claritin to take effect on hives??

Dr. Alan Gorenberg
Board Certified, Allergy and Immunology
30 years in practice
35K people helped
How long does it take for Claritin to take effect on hives??

3 days to reach peak: Claritin (loratidine) takes 3 days to reach a steady state, so it could take that long for it to work on hives. Other non-drowsy antihistamines are a better choice: Allegra (fexofenadine) reaches peak effect within 2 hours and Zyrtec (cetirizine) reaches peak effect in 1-2 hours. If you see no benefit at all within 5 hours of taking these, they probably will not work for you. ...Read more

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Dr. Scott Diede
Board Certified, Pediatric Hematology and Oncology
24 years in practice
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4
How long does it take childrens Claritin to work?

Dr. Scott Diede
Board Certified, Pediatric Hematology and Oncology
24 years in practice
3M people helped

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. Eric Weisman
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Dr. Michael Zacharisen
Board Certified, Allergy and Immunology
28 years in practice
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5
How long it take for Claritin to work?

Dr. Michael Zacharisen
Board Certified, Allergy and Immunology
28 years in practice
4M people helped

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
25 years in practice
93M people helped
6

6
How long does it take for loratadine to work?

Dr. John Munshower
Board Certified, Family Medicine
25 years in practice
93M people helped

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. Hushang Haghighat
Board Certified, Pediatric Hematology and Oncology
529K people helped
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Dr. Jeffrey Rumbyrt
Board Certified, Allergy and Immunology
27 years in practice
319K people helped
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8
How long should it take for my Claritin to work?

Dr. Jeffrey Rumbyrt
Board Certified, Allergy and Immunology
27 years in practice
319K people helped
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
28 years in practice
4M people helped
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9
How long will it take for my Claritin to kick in?

Dr. Michael Zacharisen
Board Certified, Allergy and Immunology
28 years in practice
4M people helped
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. Michael Zacharisen
Board Certified, Allergy and Immunology
28 years in practice
4M people helped
10

10
How long does Claritin take to work?

Dr. Michael Zacharisen
Board Certified, Allergy and Immunology
28 years in practice
4M people helped

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. Eric Weisman
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