6 doctors weighed in:
What are the differences between Claritin (loratadine) and clarinex?
6 doctors weighed in

Dr. Stephen Kimura
Internal Medicine - Allergy & Immunology
4 doctors agree
In brief: Metabolite
Clarinex (desloratadine) is des-loratadine and Claritin is loratadine.
Clarinex (desloratadine) is the active metabolite of claritn. So (according to the manufacturer) you have the benefits of loratidine with minimal side effects. It is common in the pharmaceutical industry to use active metabolites or isomers of drugs. This potentially gives you a more active compound while minimizing the potential side effect.

In brief: Metabolite
Clarinex (desloratadine) is des-loratadine and Claritin is loratadine.
Clarinex (desloratadine) is the active metabolite of claritn. So (according to the manufacturer) you have the benefits of loratidine with minimal side effects. It is common in the pharmaceutical industry to use active metabolites or isomers of drugs. This potentially gives you a more active compound while minimizing the potential side effect.
Dr. Stephen Kimura
Dr. Stephen Kimura
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Dr. Jack Mutnick
Internal Medicine - Allergy & Immunology
In brief: Antihistamines
Claritin is Loratadine and Clarinex is desloratadine.
Clarinex is an isomer of Claritin and was created by the company solely as a monetary instrument since Claritin was going off patent and Clarinex could only be obtained by prescription. Take it from an allergist, claritin/clarinex are poor antihistamines. Go with zyrtec or allegra (fexofenadine).

In brief: Antihistamines
Claritin is Loratadine and Clarinex is desloratadine.
Clarinex is an isomer of Claritin and was created by the company solely as a monetary instrument since Claritin was going off patent and Clarinex could only be obtained by prescription. Take it from an allergist, claritin/clarinex are poor antihistamines. Go with zyrtec or allegra (fexofenadine).
Dr. Jack Mutnick
Dr. Jack Mutnick
Thank
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