Unexplained headaches symptoms and conditions

Thanks for all the information on this site. What a shocking "heads up" I have received! My daughter is 10 and has been taking Singulair since she was about 5 years old. (She has also been on Claritin since she was 2-3 years old and hasn't seemed to have a problem with it.) My daughter has had unexplained headaches, stomach aches/pains, nausea, mood swings, depression...a lot of the same side effects that people are listing here, for years. I knew there had to be something going on, but couldn't figure out what it was. I recently started suspecting Singulair, before I even knew about all of the recent side effect links to it. I took it upon myself to start halfing her doses, and she says the headaches are starting to go away, so there must be some connection. Her pediatrician has actually RECOMMENDED taking her OFF of Singulair for about a year now, but he never explained WHY, and every time I tried to get her completely off of it, her allergy problems flared up again. So I didn't know what to do. I think now though, it's time to find an alternative. Thanks to everyone for sharing. It's nice to know that I wasn't crazy for suspecting Singulair after all. Bless all of you (and my daughter) who have suffered with this.

*One other note: My daughter was recently diagnosed with an early stage of the flu and was given TAMIFLU for treatment. This med made the headaches, stomach aches, and mood swings MUCH worse. She cried every day, and her crying was not because she had been sick. I didn't even finish giving her the full course of the med. I couldn't, it was hurting her so badly.