http://www.medications.com/effect/view/37211 My 7-1/2-year-old son was on Singulair for 5 months for asthma and possible allergies. He had been on medication for ADHD for almost a year at that point and had been doing well with it. Singulair made him into a monster. He could not be reasoned with and w Wed, 10 Dec 2008 14:43:28 -0500 http://www.medications.com/effect/view/37211?item=15173 Please visit www.parentsforsafety.org and sign our petition. Please notify your pediatrician of your son's adverse reaction to singulair as well as the FDA and Merk. Thank You and I am happy to hear your son is doing well! http://www.medications.com/effect/view/37211?item=15173 Wed, 10 Dec 2008 23:08:27 -0500 http://www.medications.com/effect/view/37211?item=15183 Glad you made the connection :-) http://www.medications.com/effect/view/37211?item=15183