Escitalopram
"I'm a 38 year old female.  I've been on Lexapro 10mgs for 2 1/2 weeks now for severe anxiety due to marital issues.  It has definitely helped- I feel much calmer about my life and has given me back the feeling of being able to cope with life's current problems.  Before starting Lexapro I was taking Valium every couple days for anxiety and I haven't needed to take a single one since starting.  The one major side effect I noticed almost immediately was difficulty in reaching orgasm (which was never an issue in the past).  I'm not yet sure whether that's a deal breaker as I think the other SSRIs would have the same effect."