In August of this year, we started giving my son 4 mg of Singulai...

In August of this year, we started giving my son 4 mg of Singulair daily for his asthma and seasonal allergies. We just found out about the connection between hyperactivity and Singulair the other day and now everything makes sense. This fall, we noticed his activity level jumped up several notches, he couldn't seem to sit still anymore and would be bouncing off the walls from morning to night. He was pretty high energy before but this was VERY VERY high energy. He could barely sit still to eat meals. He became quite dramatic and tantrums became common - he wasn't the easy-going kid he used to be. And he started waking up in the middle of the night, sometimes sobbing, where previously he had always been a very sound sleeper. Three days ago we learned about these possible hyper side effects of Singulair and two nights ago we stopped giving it to him. Last night he sat down and actually ate a good dinner with us. This morning, he seemed a tad bit calmer. We are hoping the rest of the effects will go away soon. Needless to say - no more Singulair for him. We'll find other ways to deal with his allergies and asthma.