Help Patients Know the Differences Among OTC Oral Antihistamines
Xyzal Allergy 24HR (levocetirizine) will compete with other second-generation oral antihistamines on OTC shelves.
It's the fourth to go OTC...after loratadine (Claritin, etc), cetirizine (Zyrtec, etc), and fexofenadine (Allegra, etc).
Desloratadine (Clarinex, etc) will remain Rx-only for now.
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