Asthma
"I was started on it after the first acute sudden asthma attack of my life and the inhalers  weren&#039;t working... which landed me in the emergency room and had some continuing lung spasms in the weeks following this. Once on it,  for the first time in many years I was no longer waking up wheezing and with shortness of breath at night. It&#039;s been wonderful!  Fortunately, I have never had any of the side effects noted by others. I remember feeling early on that singulair  may have contributed to weight gain, but it was  very hard to tell as 
I was at that age - late 40s -  when this begins to happen naturally. If so, I certainly would have preferred to not to gain weight, but the benefits of having a &quot;normal&quot; life with singulair have been fantastic"