Antihistamine is a type of drug that blocks the action of histamines, which can cause fever, itching, sneezing, a runny nose, and watery eyes. Antihistamines are used to prevent fevers in patients receiving blood transfusions and to treat allergies, coughs, and colds.
Generic drug use increased to a record 48% among Express Scripts' 50 million members during 2003, spurred by the use of several prominent new generics, fluoxetine, omeprazole and lisinopril.
Pfizer Inc and UCB Pharma today announced the approval of a new chewable formulation of Zyrtec® (cetirizine HCl) for the treatment of seasonal and perennial allergic rhinitis (inflammation of the nasal passages) and chronic idiopathic urticaria (itching and hives of unknown causes) in children aged two years and older. The approval by the US Food and Drug Administration makes Zyrtec the first and only prescription antihistamine available in both syrup and chewable form.