Please be careful when using this drug!!!!! My daughter is 4 y...

Please be careful when using this drug!!!!! My daughter is 4 years old and was on Singulair for a 1 1/2 years to control allergies and Asthma. She was also on 1 and 1/2 teaspoons of Zyrtec. She lost the last year and 1/2 of social and emotional growth. She became angry, aggressive, hyperactive, disconnected from reality, uncommunicative. She was deliberately hitting, scratching, etc. unprovoked. She retreated into a fantasy world where there was alot of "killing" and other scary things. The other kids were scared of her. Her teacher, who has over twenty years of teaching in a University Laboratory school (she knows what she is doing) said that her behavior was the most extreme she had ever seen. I took her to the Pediatrician, to a child Psychologist, and to a Physiciatrist. They were thinking ADHD and maybe Bi-Polar or ODD or worse...we were very scared. The Pediatrician said, no the drug could not be causing this. This site helped me to realize that maybe it was the Singulair. Psychologist, physiciatrist and allergist all said, yes it could be the drugs. We got her allergy tested and she was extremely allergic and started allergy shots. We took her off the Singulair and Zrytec and starting seeing changes in her behavior within a week. It has now been 5 weeks and our little girl is back...she is smiling again, happy!! and communicating! We can have a conversation with her now! It is amazing. Everyone has noticed the difference..her teachers, Dr.'s, etc. She has had a few outbursts and some hyperactivity since but they are diminishing as time goes by. I just wonder how long it will take for all the effects to be gone and how much work we have to do to teach her all the things she missed developmentally over the last year and 1/2 while her mind my blocked by this drug. They should take it off the market. It is frightening. Please beware!!!!!!!!