I am so upset about this news about Singulair. My 9 year old son...

I am so upset about this news about Singulair. My 9 year old son was put on Singulair in November when he was diagnosed with pneumonia. We have had a horrible time since then with his 'attitude' and now it has spilled over into school. He has had all the symptoms that everyone else is talking about on this site. He has severe mood swings and outburst, he yells and can't control his anger at times. On three different occasions specifically I can remember him saying he wished he were dead or that he was going to kill himself. He also has complained of headaches, leg cramps, nightmares, he says he is unable to sleep or to get back to sleep. He is also very emotional. I thought he was having a hard time dealing with some family issues going on, which may very well still be the case but I believe with all of my heart that Singulair is making things worse. We ran out of the medication about 2 weeks ago and I didn't refill because the doctor said he should stop taking it in the spring and begin again in the fall. My son will not be taking this medication any more. I feel so horrible that my son has had to feel like he has only because of medication.