http://www.medications.com/effect/view/38580 I have a grandson who is on singulair since he would walk. He is now 5 years old. He has trouble in school, heat racing, out of control tantrums, biting and hiting in daycare. When he is not taking this medicine he is a different child. Parents are doi Mon, 02 Feb 2009 17:39:00 -0500 http://www.medications.com/effect/view/38580?item=16676 Please share the information about Singulair on the Parents United for Pharmaceutical Safety & Accountability website: www.parentsforsafety.org with your grandson's parents: On the "news" page, you will see a link to the FDA statement advising parents http://www.medications.com/effect/view/38580?item=16676