I am posting this because I am just outraged reading all these e-mails and it is exactly the same thing over and over again. My son is now 6 and has been on singular for a little over a year. He was started on it after a asthma attack over the Christmas holidays. Prior to taking the medication he was a sweet loving kid. Honestly because he was so good we could not wait to have another one. Then came these crying spells for no reason. Then out of no where he would attack and kick and scream like someone was killing him even if you just asked to put your shoes on. It was crazy. Never made the connection to the singular. He started kindergarten and it was the same thing there. One week we happened to be really short on money due to an emergency and could not refill his prescription till the following Friday. And looking back now it was the first week that there were very little problems with him and he got all good remarks that week from his teacher.Well again at the time we did not make the connection.Back on the drug and back with the aggressive and bad behavior. Then our local t.v. news did a story about this medication. We looked at each other in shock and thought how could we have missed this? We decided to do our own test and took him of the medication again. While the hacking cough is back his mood swings have all but vanished and he is back to normal minus a few crying spells the last few days. I am confident keeping him off the meds. those will disappear soon enough to. We are only into day 4 off our test and already the diff. is huge. Something needs to be done about it now.