5 doctors weighed in:

Are Claritin (loratadine) and zyrtec the same effectiveness when use for allergic rhinitis?

5 doctors weighed in
Dr. Jeffrey Rumbyrt
Internal Medicine - Allergy & Immunology
2 doctors agree

In brief: Yes

Claritin (loratadine) and zyrtec are both oral antihistamine agents that block the effects of histamine on what is called the h1 receptor. By doing this, they reduce the release of histamine, a substance that causes itching, runny nose, and sneezing.
Zyrtec blocks the receptor a bit better, but the clinical effect of the medications is roughly the same. Zyrtec may cause some drowsiness, but may last longer.

In brief: Yes

Claritin (loratadine) and zyrtec are both oral antihistamine agents that block the effects of histamine on what is called the h1 receptor. By doing this, they reduce the release of histamine, a substance that causes itching, runny nose, and sneezing.
Zyrtec blocks the receptor a bit better, but the clinical effect of the medications is roughly the same. Zyrtec may cause some drowsiness, but may last longer.
Dr. Jeffrey Rumbyrt
Dr. Jeffrey Rumbyrt
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Dr. Paul Carter
Internal Medicine - Allergy & Immunology
2 doctors agree

In brief: Essentially

Uncomplicated allergic rhinitis responds well to both drugs.
However, one study seemed to indicate that Cetirizine (zyrtec) works better. J allergy clin immunol. 1999 apr;103(4):715.

In brief: Essentially

Uncomplicated allergic rhinitis responds well to both drugs.
However, one study seemed to indicate that Cetirizine (zyrtec) works better. J allergy clin immunol. 1999 apr;103(4):715.
Dr. Paul Carter
Dr. Paul Carter
Thank
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