http://www.medications.com/effect/view/27880 Behavioral changes started when my son was 3 years old and on Singulair, 4mg chewables. He became more angry, irritable, and even stated a few times that he wished he were dead. He has had trouble concentrating and has frequent nightmares. Mon, 10 Mar 2008 23:34:26 -0400 http://www.medications.com/effect/view/27880?item=5458 My opinion, is that this is NOT a good drug for children, maybe no one. It caused the same type symptoms as steriods like predisone--even thought the allergist kept saying it was not. She gained a lot of weight, had the "moon" face etc. So I would think http://www.medications.com/effect/view/27880?item=5458 Tue, 11 Mar 2008 13:54:45 -0400 http://www.medications.com/effect/view/27880?item=5469 We took our son off of it about a month ago. No tapering, just stopped him cold turkey. He is so skinny, and I had also wondered if it was decreasing his appetite. There were just too many suspicions for me with this med. He will not be going back on i http://www.medications.com/effect/view/27880?item=5469 Fri, 14 Mar 2008 13:25:46 -0400 http://www.medications.com/effect/view/27880?item=5540 Same experience, different child. I took my daughter off Singulair almost a month ago and she is returning to the loving, happy little girl I knew before she started taking Singulair. Sadly, I was blind to the potential side effects for 6 years before I http://www.medications.com/effect/view/27880?item=5540 Fri, 14 Mar 2008 15:28:49 -0400 http://www.medications.com/effect/view/27880?item=5543 Apparently Merck is now listing these side effects, but from what I understand, many doctors are not aware because their samples and such still have the old labels and info. I plan to discuss this with our pediatrician next week when my other kids have an http://www.medications.com/effect/view/27880?item=5543 Thu, 27 Mar 2008 17:28:09 -0400 http://www.medications.com/effect/view/27880?item=5909 My duaghter is almost 5 and has been on Singulair 4mg chewables for almost 2 years. She has, however, in the past 6 months, been experienceing mood swings, irritablilty, difficulty concentrating and attneding to simple tasks and instructions and very litt http://www.medications.com/effect/view/27880?item=5909