Allergic Rhinitis
"Zyrtec works incredibly well for my severe ragweed allergy.  However, each fall I&#039;ve noticed it&#039;s making me more and more drowsy, to the point that I don&#039;t want to do anything and I&#039;m needing naps in the afternoon.  I think I&#039;m going to have to discontinue it, which is frustrating because it works much better than the other meds I&#039;ve tried."