Antihistamines are drugs used to treat allergies ... only OTC antihistamine nasal spray option, Astepro, is a ...

Second-generation H1-antihistamines include cetirizine (Zyrtec), loratadine (Claritin), and, more recently, fexofenadine (Allegra). These drugs, which block metabolites called histamines released by ...

second-generation H1 antihistamine such as fexofenadine (Allegra), loratadine (Claritin), cetirizine (Zyrtec), or desloratadine (Clarinex). These medications do not cause drowsiness and are ...