http://www.medications.com/effect/view/29544 Oh my gosh, I am just shocked after reading these posts. I am taking my son off of Singulair immediatedly!!!! I knew I wasn't crazy!! My son was on Singulair for over 2 years and it was awful. He was so hyper and uncontrollable. He couldn't control hi Sun, 13 Apr 2008 18:34:51 -0400 http://www.medications.com/effect/view/29544?item=7142 I have always believe that doctors regard Singulair in the same category as an anti-histamine. The fact that Singulair inhibits histamine is not a direct process. Merck has misled them and confused them. http://www.medications.com/effect/view/29544?item=7142 Sun, 13 Apr 2008 18:43:59 -0400 http://www.medications.com/effect/view/29544?item=7143 Adverse Reactions (As reported in adults) >10%: Central nervous system: Headache (18%) 1% to 10%: Central nervous system: Dizziness (2%), fatigue (2%), fever (2%) Dermatologic: Rash (2%) Gastrointestinal: Dyspepsia (2%), dental pain (2%) http://www.medications.com/effect/view/29544?item=7143 Thu, 17 Apr 2008 09:57:21 -0400 http://www.medications.com/effect/view/29544?item=7341 I just want to respond to your statement "This medicine should be outlawed." While I do agree that research and public awareness of the possible side-effects should be done, there are some of us that take Singulair without negative side-effects. I have bee http://www.medications.com/effect/view/29544?item=7341 Mon, 04 Aug 2008 12:13:23 -0400 http://www.medications.com/effect/view/29544?item=10731 Thanks for your insights. My son has many of the same symptoms that your son had, including hyperactivity. His teacher also felt he had ADD. Yet when I look back on when his misbehavior started, (irritability, constantly moving, unable to sleep, inabili http://www.medications.com/effect/view/29544?item=10731