http://www.medications.com/effect/view/28597 My son is 17years old and has been taking sigular for 5 years due to allergies and a minor asthma condition, I am also seeing many of the side effects. The major ones are explosive anger, easy frustrations, laziness/lack of motivation, leg pains and cramp Fri, 28 Mar 2008 15:11:07 -0400 http://www.medications.com/effect/view/28597?item=6039 Please respond to my reply, I can help your son. http://www.medications.com/effect/view/28597?item=6039 Sun, 30 Mar 2008 10:02:58 -0400 http://www.medications.com/effect/view/28597?item=6199 Hi Jmsierra, I just emailed you I hope you can respond. However I do want to ask. Is your son still taking Singulair? And if not when did he quit? Also have you noticed any changes? These answers would really help me. You could reply to my posting I did o http://www.medications.com/effect/view/28597?item=6199