http://www.medications.com/effect/view/37029 I found this web site while searching side effect of Singulair. My Son - 7 years old is experiencing same issue - Severe random leg pain in both legs or 1 leg as mentioned by few others. He can not walk when it happened and I have to carry him. The pain di Wed, 03 Dec 2008 00:12:36 -0500 http://www.medications.com/effect/view/37029?item=14973 i just posted a question but for some reason i don't see my post anymore in the thread.i just wanted to add that i have gone through all the posts and if there was anyway to take back all the medication i have already given my 2 1/2yr old i would. i feel r http://www.medications.com/effect/view/37029?item=14973 Wed, 03 Dec 2008 20:00:25 -0500 http://www.medications.com/effect/view/37029?item=14994 Leg pain is a side effect of Singulair. This is serious and should not be ignored. If there is no other medical reason for the leg pain it is crucial that your son stop taking Singulair to determine if it is the reason for the pain. If your son has asthma, http://www.medications.com/effect/view/37029?item=14994 Fri, 12 Dec 2008 21:27:40 -0500 http://www.medications.com/effect/view/37029?item=15222 My daughter will be 8 in February and has been on singulair for 4 years. I am sad to say I had no idea this drug could cause so many side effects. When her leg pain strikes it can be in one or both of her legs, mostly her left leg. It seemed that she g http://www.medications.com/effect/view/37029?item=15222 Wed, 21 Jan 2009 21:54:44 -0500 http://www.medications.com/effect/view/37029?item=16262 im 13 and at night i get these pains in my leg and sometimes foot but i wack up crying at like 3:30 at night and i cant walk or anything so i just site their on my bed in pain http://www.medications.com/effect/view/37029?item=16262