http://www.medications.com/effect/view/41490 I have been taking Singulair since November 08. Over the six months I noticed that I was suffering from depression and increased anxiety, plus an irregular heart rhythm. I experienced nightmares on an almost nightly basis. I have since stopped the medica Fri, 15 May 2009 11:43:31 -0400 http://www.medications.com/effect/view/41490?item=19852 So glad to hear you are feelling better and wishing you a quick recovery. Please report your adverse reaction to the FDA: https://www.accessdata.fda.gov/scripts/medwatch/medwatch-online.htm Visit http://www.parentsforsafety.org/17601/37901.html for m http://www.medications.com/effect/view/41490?item=19852 Sat, 23 May 2009 13:45:19 -0400 http://www.medications.com/effect/view/41490?item=20057 I too am having irregular heart rhythm. I like the effects of the meds--I have noted I can sing better in the choir. Also, I do not have wheezing with exercise activity like I used to have. Because of the heart irregularities, I may need to stop the med http://www.medications.com/effect/view/41490?item=20057