Sweet baby boy symptoms and conditions

My son has been on singulair for the past 6 to 8 months and my husband and i have had a very difficult time with him and his behavior. We have noticed him being very angry, mad, sad, screaming out for no reason, very defiant and not listening. He has been making threats to me for a while now, saying he wants to kill me, but only to me, his mother. He has become physically violent to himself and household items and me at times. He has night terrors and screams out at least 6 nights out of the week. He has bad headaches and often doesn't feel good. His stomach bothers him a lot. He makes constant threats to me and seems to not be able o handle the simplest task. I will not be giving my son this medication ever again after reading on this site. My son has suffered long enough as have we, his family. I want my loving sweet baby boy back! It makes me wonder what the hell is wrong with our society that they would continue to prescribe this medication knowing the horrible affects that our children endure. Shame on you! You deserve more than a slap on the hand! You should have your licensed stripped and e put out of business!