http://www.medications.com/effect/view/28533 Living with our 13 year old son for the last 7-8 months has been like H--L, and now to read about all of this, we've taken him off Singulair as of last night. We've been completely at a loss why the sudden shift in his behavior, and we assume too it was hor Sat, 15 Nov 2008 14:53:03 -0500 http://www.medications.com/effect/view/28533?item=14515 Please visit the Parents United for Pharmaceutical Safety and Accountability advocacy website at: www.parentsforsafety.org. We are petitioning the FDA for labeling changes to Singulair. Please sign our petition and ask your friends and family to do the sam http://www.medications.com/effect/view/28533?item=14515