I am on Lexapro for depression. My pharmacy information says that Lexapro can also be used on GAD. I can tell that it lowers anxiety at work. I seem to spend less time worrying about what others think of me. As for OCD, I don't know. I know that some anti-depressants are used for it. Lexapro's manufacturer has a website which can be googled which has the patient leaflet on it. I read it because my doctor didn't tell me much about the drug when she ask me to try it.