Consumer Reports takes a look at how well antihistamines and other treatments work to relieve symptoms:
Runny nose, sneezing, itchy and watery eyes—the symptoms of allergies can make you miserable and desperate for relief. Avoiding substances that trigger your allergies can help, but since that is not always possible, you may reach for a medication.
Several types of allergy treatments are available—allergy shots, antihistamines (pills, eye drops, and nasal sprays), cromolyn, leukotriene blockers, and nasal steroid sprays. This report focuses on second-generation antihistamine pills and nasal sprays, such as Allegra, Clarinex, Claritin, Xyzal, and Zyrtec.
SRC: The full article can be found at: http://goo.gl/OxhTsr