Category:
Antihistamine
Description:
Indications:
Seasonal rhinitis
Idiopathic chronic urticaria
Seasonal allergic rhinitis with asthma
Precautions:
Pregnancy category B; excreted in breast milk at levels equivalent to serum levels
Increased intraocular pressure
Hepatic disease
Renal insufficiency
Adverse Reactions (Side Effects):
CNS: insomnia, sedation
GI: dry mouth
Dosage:
Administered orally
Adult: PO 10mg once daily; give every other day in hepatic impairment or renal insufficiency (CrCl <30 ml/min)
Special considerations:
Effective, but expensive nonsedating antihistamine; reserve for patients unable to tolerate sedating antihistamines like diphenhydramine