This registry is a place to share positive or negative side effects of using Zyrtec. If you directly experienced a side effect while using Zyrtec, then we encourage you to enter it here. Please note that entries here are the experiences of individual users, and in no way means that you or anyone else will experience the same side effect, since the same medication affects people in different ways. Please always contact your physician.
-- Read the entire disclaimer
October 25th
2007
7:22 PM
My 5 year old daughter has been taking Zyrtec now for about 2 months. During this whole time, she has been angry, aggressive, irritable and very anxious. She has been purposefuly doing things to provoke my anger/concern, including punching her sister, slamming the fridge door on me, and even hitting herself. She NEVER did this before taking the darn stuff. I am taking her off of it immediately. It makes you think why the god-darn good for nothing allergist didn't tell me about this possibility! My poor daughter. I can't wait to have her back!
-- By zyrtecsucks | Reply | Private Message me