Allergic rhinitis 10 mg once daily. Patient w/ more severe symptom including perennial allergic rhinitis 20 mg once daily. Idiopathic chronic urticariaAdult 10 mg once daily. Patient w/ mild to moderate hepatic impairment Not to exceed 10 mg daily.
Caution in patients at cardiac risk (eg, those w/ long QT syndrome, hypokalemia, treatment w/ any drug known to increase QT interval or inhibit CYP3A4 enzyme systems eg, azole antifungals & macrolide antibiotics). Use only during pregnancy if clearly needed. Not to be used during lactation.