I've read some of the other posting and I'm a bit concerned. I h...

I've read some of the other posting and I'm a bit concerned. I have twin boys who were started on Singulair about 2 years ago for seasonal allergies. They went on it around sept. and remained on it thru may. They came off of it during the summer months but were put back on it again in Sept. My boys were about 2.5 years when they were put on it and now I'm starting to put the pieces together. They have developed agressive behaviors toward me, their father and each other. They are very moody and irritable and have become anxious about being left at school, which was not a problem during the summer months they were off it. They also become very hyperactive after initially taking the medication at night. I also have a nephew who was put on it about a year and a half ago. He is 8.5 and has developed anxiety about going to school, which he did not have prior to taking this med, headaches, and stomache aches. I'm not sure if all these are truly being brought on by singulair, but its highly likely.