I've been taking Lexapro for a few weeks and it is working very well for me. I've seen no side effects but I'm seeing good improvement in my behavior and anxiety level. I'm on a very low dose though as taking more triggers my insomnia.

While I tried a larger dose for a couple of days, I did have very vivid dreams which my doctor told me was a side effect. The dreams stopped and I started sleeping better on a low dosage.

Also, when I started taking it, that was the first time in 3 years that I started sleeping and beating the insomnia.