Asthma
"Started Singulair approx 1 wk ago. I will say it&#039;s an asthma miracle, but the side effects are unreal. I had extreme irritability (out of character for me) severe fatigue when normally active, mood changes, depression, anxiety. I wish doctors would really explain this to new users thanks to all of you who reviewd this medicine and gave me insite on what was going on, that&#039;s the reason for my post too. "