I have been taking it for about 3-1/2 years. The very first side...

I have been taking it for about 3-1/2 years. The very first side effect I noticed was insomnia. After doing hunting on Merck, I could not find anything. Finally called the company and they said there were some studies done after the FDA released the drug and insomnia was one side effect. I talked to my doctor, he put me on the kid's dosage to try and help the insomnia. I still had it. So he told me to take it in the morning. The kids dosage wasn't helping as much, so I was put back on the adult dosage. During the first 6 months of being on it I noticed weight gain. I thought it was due to getting older. After seeing other people with weight gain I now believe my 20 plus pounds I have put on and can not get off, no matter what I do is the Singulair. Odd, about 6 months after the start and I was taking the Singulair I wondered if it was that, since I had not changed anything, ate the same, my work keeps me active and NO MATTER WHAT I DID, I JUST KEEP GAINING WEIGHT. Wouldn't you know I just picked up and paid for my new months worth. While it has helped the wheezing, I WILL NOT continue taking it. Also I have had a major problem with forgetfulness, which I NEVER HAD BEFORE SINGULAIR. Also have had problems with being inspired to do things, just don't care anymore.