OTC medications can provide symptom relief without ... Allegra (fexofenadine) Clarinex (desloratadine) Claritin (loratadine) Xyzal (levocetirizine) Zyrtec (cetirizine) Antihistamines should ...

Xyzal will continue to challenge desloratadine (Clarinex), Schering–Plough's follow-on to Claritin, for branded antihistamine prescriptions. Over-the-counter market The OTC market is an ...