My daughter's doctor put her on Singulair just about a week ago. She had a persistent barking cough that would not go away, even after 3 weeks on Albuterol. Because the pill was so expensive (even WITH insurance it was $120.00) and I could not afford it, her doctor gave me free samples. I gave it to her for the first time last night. I was telling a friend of mine about how nice it was that my daughter's doctor gave me free samples and what a blessing it was. When I told her what pill it was she started telling me about what happened to some of her kids in her class (she's a teacher). I was surprised. She told me she didn't want to scare me, she just wanted to make me aware. I didn't get scared, but I certainly wanted to find out if what she was telling me was common or just rare in a few cases. I am one of those people that will ask advice of other moms, etc., but ultimately do my own research and find out for myself to confirm any suspicions. I know some moms who freak out over every little thing and take someone's word for it, even without doing their own research. I am not one of those mom's. So I Googled "singulair side effects" and found this site. I could not believe that everything my friend had told me has also been experienced by so many others on this site. Needless to say, I will NOT be giving her Singulair anymore. I am just so thankful that I had someone tell me about it BEFORE she had to experience some of the terrible things that other children have had to experience. It is unacceptable that this drug is allowed to be prescribed, especially for young children. I am going to look into a more natural way to help ease her sniffles and cough.