Singulair
"Although Singulair 10mg tablets work great for me on a daily, regular basis for maintenance issues with asthma, I have found that one of its side effects has appeared. At first it was not connected until recently when information came out that Singulair could cause ear infections. This particular side effect appeared about 3-4 months after starting Singulair but no connectione was made until recently after using it for two years. So be aware of side effects and keep close tabs on usage results."