allergic rhinitis
"Every allergy pill I try stops working eventually, so after using Claritin and Zyrtec, I decided to try Allegra. It is my first day using it and it partially clears me up but it is 3 in the morning and I have yet to feel tired. I can see that I am not alone, so I'll be going back to Zyrtec until I can see my doctor about switching to something else."