I've been blown away also. My son is 10 years old and was originally diagnosed with RAD (Reactive Airway Disease) when he was about 3 and has had allergy and mild asthma issues since. When he was 5 he was put on Singulair, Nasonex, and Zyrtec. My son has always been a beautifully happy child, but the last few years have been extremely emotional for him. He gets depressed, he's extremely hard on himself and is ultra-sensitive and scared about everything. He has never been frightened and was a baby that loved his room and always slept really well. Now I think that I understand why he’s been afraid to sleep in his room alone. Ever since he's been on Singulair he complains and complains of bad dreams. I can't believe that I'm hearing that he's been taking this medication like clock-work for 5 years and all of his problems may be related to this. His allergies are not severe and nor has his asthma ever been - but I was told constantly that he needs this medication. This is unbelievable - I've stopped giving Singulair to him and have made an appointment with a new allergist.