Singulair Side Effects: I would like to urge everyone to report adverse drug reactions to http://www.medications.com/effect/view/30736 I would like to urge everyone to report adverse drug reactions to the FDA. Without a supporting data base, things move way too slowly and other people get hurt. I was doing some further work on quinolines/quinolones and ran across a medical researcher who HI, Its been 2months since my 3yr old son has been on Singulair, Sat, 24 May 2008 20:04:30 -0400 http://www.medications.com/effect/view/30736?item=8575 HI, Its been 2months since my 3yr old son has been on Singulair, and I have noticed a significant change in his behavior.He is extremely aggressive, hitting,biting, things that he was never doing, he was always sooo loving, I decided to look up side effe http://www.medications.com/effect/view/30736?item=8575 Sat, 24 May 2008 20:40:05 -0400 http://www.medications.com/effect/view/30736?item=8577 http://www.medications.com/effect/view/30736?item=8577