My 5 year old daughter has been taking Zyrtec now for about 2 mon...

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!