http://www.medications.com/effect/view/42666 My 4y/o son has asthma that was not well under control, so the doctor put him on Singulair and Flovent about 2 months ago. In the first few weeks, he started having severe leg pain. He would be up at night crying. I would massage his legs till he went to s Tue, 30 Jun 2009 10:13:26 -0400 http://www.medications.com/effect/view/42666?item=21061 Your son's symptoms have ALL been seen in other children taking Singulair. Please visit www.parentsforsafety.org for more information. http://www.medications.com/effect/view/42666?item=21061