3 doctors weighed in:

How long does clarinex (desloratadine) (desloratidine) take to get out of your system?

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

In brief: 24 hours or more

Desloratadine is an isomer of loratadine.
It is allegedly more effective at binding the antihistamine receptor and less likely to cause side effects. It generally has a 24 hour effect. However, to completely be out of your system, it would probably take 3 days.

In brief: 24 hours or more

Desloratadine is an isomer of loratadine.
It is allegedly more effective at binding the antihistamine receptor and less likely to cause side effects. It generally has a 24 hour effect. However, to completely be out of your system, it would probably take 3 days.
Dr. Jeffrey Rumbyrt
Dr. Jeffrey Rumbyrt
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