My son has been on Singulair off and on for two years. He goes of...

My son has been on Singulair off and on for two years. He goes off in the summertime since his asthma is mostly due to upper respiratory infections. He recently went back on it, maybe three weeks ago. He is 7 years old. Every morning now he wakes up with nightmares. This morning he said that he had a nightmare that all six of his webkinz were killed, except for one. The night before he said a tornado had blow our house away. There have been other nightmares too. I decided this morning to stop Singulair, then called the allergist. The allergist agreed we should stop it and see what effect would happen. Today during school, the teacher had to call me because he was yelling at other students and was hitting books because he wanted a prize for fund raising. She said he was inconsolable. During the summer, he was a totally different child -- easy going, laughing a lot. Now he seems stressed out, anxious and depressed. I also noticed he has begun oversleeping. Even worse, he was diagnosed with ADHD back in April. All of the surveys filled out by teachers and by me were from when he was on Singulair. I know that drugs can do this to adults. I was once on a birth control pill that made me so paranoid and neurotic, I had never felt that way before. A different pill was fine and never had that happen again.