My daughter was on Singulair for about 4 weeks this spring. She w...

My daughter was on Singulair for about 4 weeks this spring. She went from an outgoing talkative 15 yr old to being withdrawn and sad. Her symptoms were feeling hopeless, headaches, stomach pain, constantly tired. She was sleeping 9-10 hours at night without feeling like she had slept at all. She would fall asleep in class (not her normal at all). Her teachers noticed that she had stopped participating in class and seemed "sad". I took her to her pediatrician and she ordered blood work and an ultrasound of the abdomen-all of which came back normal. I toyed with the idea that maybe she was becoming clinically depressed. I researched her symptoms and came across others who had similar symptoms while on Singulair. I took her off Singulair and have noticed an improvement in her mood. Her teacher commented yesterday that it was nice to see her smile again and being happy. She told her that she noticed that she had seemed "sad" these last few weeks. I hope that they take seriously these potential problems with this drug. I will never allow my daughter to take this or any other related drug.